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180300
RA
RHEUMATOID ARTHRITIS
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Body Regions
Extremities
Lower Extremity
Foot
Ankle
Forefoot, Human
Metatarsus
Toes
Heel
Hip
Knee
Leg
Thigh
Upper Extremity
Arm
Axilla
Elbow
Forearm
Hand
Fingers
Thumb
Metacarpus
Wrist
Shoulder
Head
Face
Cheek
Eye
Forehead
Mouth
Lip
Nose
Neck
Torso
Abdomen
Abdominal Cavity
Peritoneum
Mesentery
Peritoneal Cavity
Abdominal Wall
Inguinal Canal
Back
Lumbosacral Region
Thorax
Thoracic Cavity
Mediastinum
Viscera
Musculoskeletal System
Cartilage
Elastic Cartilage
Laryngeal Cartilages
Arytenoid Cartilage
Cricoid Cartilage
Fibrocartilage
Intervertebral Disc
Menisci, Tibial
Hyaline Cartilage
Cartilage, Articular
Laryngeal Cartilages
Arytenoid Cartilage
Cricoid Cartilage
Ligaments
Ligaments, Articular
Anterior Cruciate Ligament
Longitudinal Ligaments
Patellar Ligament
Posterior Cruciate Ligament
Muscles
Muscle, Skeletal
Masticatory Muscles
Masseter Muscle
Neck Muscles
Oculomotor Muscles
Quadriceps Muscle
Respiratory Muscles
Rotator Cuff
Muscle, Smooth
Muscle, Smooth, Vascular
Tunica Media
Myocardium
Skeleton
Bone and Bones
Bones of Lower Extremity
Foot Bones
Metatarsal Bones
Tarsal Bones
Calcaneus
Talus
Leg Bones
Femur
Femur Head
Femur Neck
Patella
Tibia
Pelvic Bones
Acetabulum
Ilium
Pubic Bone
Bones of Upper Extremity
Arm Bones
Humerus
Radius
Ulna
Hand Bones
Carpal Bones
Finger Phalanges
Metacarpal Bones
Scapula
Diaphyses
Epiphyses
Growth Plate
Skull
Facial Bones
Jaw
Mandible
Mandibular Condyle
Occipital Bone
Foramen Magnum
Sphenoid Bone
Temporal Bone
Spine
Cervical Vertebrae
Axis
Odontoid Process
Cervical Atlas
Intervertebral Disc
Lumbar Vertebrae
Sacrum
Thoracic Vertebrae
Thorax
Ribs
Sternum
Manubrium
Joints
Acromioclavicular Joint
Atlanto-Axial Joint
Atlanto-Occipital Joint
Bursa, Synovial
Cartilage, Articular
Elbow Joint
Foot Joints
Ankle Joint
Metatarsophalangeal Joint
Tarsal Joints
Subtalar Joint
Toe Joint
Hand Joints
Finger Joint
Metacarpophalangeal Joint
Wrist Joint
Hip Joint
Joint Capsule
Synovial Membrane
Synovial Fluid
Knee Joint
Menisci, Tibial
Ligaments, Articular
Anterior Cruciate Ligament
Longitudinal Ligaments
Patellar Ligament
Posterior Cruciate Ligament
Pubic Symphysis
Sacroiliac Joint
Shoulder Joint
Temporomandibular Joint
Temporomandibular Joint Disc
Zygapophyseal Joint
Tendons
Achilles Tendon
Patellar Ligament
Rotator Cuff
Digestive System
Biliary Tract
Gallbladder
Gastrointestinal Tract
Intestines
Intestinal Mucosa
Enterocytes
Intestine, Large
Cecum
Appendix
Colon
Colon, Sigmoid
Rectum
Intestine, Small
Duodenum
Ileum
Jejunum
Lower Gastrointestinal Tract
Ileum
Intestine, Large
Cecum
Appendix
Colon
Colon, Sigmoid
Rectum
Jejunum
Mouth
Dentition
Salivary Glands
Parotid Gland
Salivary Ducts
Salivary Glands, Minor
Submandibular Gland
Pharynx
Upper Gastrointestinal Tract
Duodenum
Esophagus
Stomach
Gastric Mucosa
Liver
Pancreas
Islets of Langerhans
Pancreatic Ducts
Respiratory System
Larynx
Glottis
Vocal Cords
Laryngeal Cartilages
Arytenoid Cartilage
Cricoid Cartilage
Lung
Bronchi
Pulmonary Alveoli
Nose
Nasal Mucosa
Nasal Septum
Pharynx
Nasopharynx
Oropharynx
Palatine Tonsil
Pleura
Respiratory Mucosa
Nasal Mucosa
Trachea
Urogenital System
Genitalia
Genitalia, Female
Adnexa Uteri
Ovary
Genitalia, Male
Testis
Vas Deferens
Germ Cells
Spermatozoa
Gonads
Ovary
Testis
Urinary Tract
Kidney
Kidney Cortex
Kidney Glomerulus
Juxtaglomerular Apparatus
Mesangial Cells
Glomerular Mesangium
Kidney Medulla
Nephrons
Kidney Glomerulus
Juxtaglomerular Apparatus
Mesangial Cells
Glomerular Mesangium
Kidney Tubules
Kidney Tubules, Proximal
Urinary Bladder
Endocrine System
Endocrine Glands
Adrenal Glands
Adrenal Cortex
Adrenal Medulla
Gonads
Ovary
Testis
Islets of Langerhans
Pineal Gland
Pituitary-Adrenal System
Pituitary Gland
Pituitary Gland, Anterior
Thyroid Gland
Neurosecretory Systems
Hypothalamo-Hypophyseal System
Pituitary Gland
Pituitary Gland, Anterior
Pineal Gland
Cardiovascular System
Blood Vessels
Arteries
Aorta
Aorta, Abdominal
Aorta, Thoracic
Arterioles
Brachial Artery
Brachiocephalic Trunk
Carotid Arteries
Carotid Artery, Common
Carotid Artery, External
Carotid Artery, Internal
Celiac Artery
Cerebral Arteries
Coronary Vessels
Epigastric Arteries
Femoral Artery
Mesenteric Arteries
Popliteal Artery
Pulmonary Artery
Radial Artery
Renal Artery
Vertebral Artery
Endothelium, Vascular
Tunica Intima
Microvessels
Arterioles
Capillaries
Venules
Muscle, Smooth, Vascular
Tunica Media
Retinal Vessels
Tunica Intima
Veins
Coronary Vessels
Portal System
Umbilical Veins
Pulmonary Veins
Venules
Heart
Heart Conduction System
Atrioventricular Node
Heart Valves
Aortic Valve
Chordae Tendineae
Mitral Valve
Tricuspid Valve
Heart Ventricles
Myocardium
Pericardium
Nervous System
Central Nervous System
Brain
Brain Stem
Reticular Formation
Rhombencephalon
Medulla Oblongata
Limbic System
Hypothalamus
Prosencephalon
Diencephalon
Epithalamus
Pineal Gland
Hypothalamus
Hypothalamus, Middle
Hypothalamo-Hypophyseal System
Pituitary Gland
Pituitary Gland, Anterior
Telencephalon
Cerebrum
Basal Ganglia
Cerebral Cortex
Frontal Lobe
Motor Cortex
Temporal Lobe
Rhombencephalon
Myelencephalon
Medulla Oblongata
Meninges
Arachnoid
Subarachnoid Space
Spinal Cord
Posterior Horn Cells
Ganglia
Ganglia, Sensory
Ganglia, Spinal
Neural Pathways
Afferent Pathways
Auditory Pathways
Neuroglia
Astrocytes
Oligodendroglia
Myelin Sheath
Schwann Cells
Myelin Sheath
Neurons
Nerve Fibers
Adrenergic Fibers
Sympathetic Fibers, Postganglionic
Autonomic Fibers, Postganglionic
Sympathetic Fibers, Postganglionic
Axons
Nerve Fibers, Myelinated
Myelin Sheath
Neurons, Afferent
Hair Cells, Auditory
Hair Cells, Auditory, Outer
Hair Cells, Vestibular
Posterior Horn Cells
Retinal Neurons
Photoreceptor Cells
Photoreceptor Cells, Vertebrate
Sensory Receptor Cells
Chemoreceptor Cells
Mechanoreceptors
Neuroepithelial Cells
Hair Cells, Auditory
Hair Cells, Auditory, Outer
Hair Cells, Vestibular
Nociceptors
Photoreceptor Cells
Photoreceptor Cells, Vertebrate
Neurons, Efferent
Motor Neurons
Neurosecretory Systems
Hypothalamo-Hypophyseal System
Pituitary Gland
Pituitary Gland, Anterior
Pineal Gland
Peripheral Nervous System
Autonomic Nervous System
Autonomic Pathways
Autonomic Fibers, Postganglionic
Sympathetic Fibers, Postganglionic
Facial Nerve
Vagus Nerve
Parasympathetic Nervous System
Facial Nerve
Vagus Nerve
Sympathetic Nervous System
Vasomotor System
Ganglia, Sensory
Ganglia, Spinal
Peripheral Nerves
Autonomic Pathways
Autonomic Fibers, Postganglionic
Sympathetic Fibers, Postganglionic
Facial Nerve
Vagus Nerve
Cranial Nerves
Facial Nerve
Trigeminal Nerve
Vagus Nerve
Vestibulocochlear Nerve
Cochlear Nerve
Vestibular Nerve
Schwann Cells
Myelin Sheath
Spinal Nerves
Brachial Plexus
Median Nerve
Radial Nerve
Lumbosacral Plexus
Femoral Nerve
Sciatic Nerve
Peroneal Nerve
Tibial Nerve
Sural Nerve
Spinal Nerve Roots
Ganglia, Spinal
Sensory Receptor Cells
Chemoreceptor Cells
Mechanoreceptors
Neuroepithelial Cells
Hair Cells, Auditory
Hair Cells, Auditory, Outer
Hair Cells, Vestibular
Nociceptors
Photoreceptor Cells
Photoreceptor Cells, Vertebrate
Sense Organs
Ear
Ear, External
Tympanic Membrane
Ear, Middle
Ear Ossicles
Ear, Inner
Cochlea
Organ of Corti
Hair Cells, Auditory
Hair Cells, Auditory, Outer
Vestibule, Labyrinth
Saccule and Utricle
Acoustic Maculae
Hair Cells, Vestibular
Eye
Anterior Eye Segment
Anterior Chamber
Aqueous Humor
Conjunctiva
Cornea
Epithelium, Corneal
Eyelids
Conjunctiva
Lacrimal Apparatus
Oculomotor Muscles
Retina
Retinal Neurons
Photoreceptor Cells
Photoreceptor Cells, Vertebrate
Sclera
Nose
Tissues
Body Fluid Compartments
Extracellular Space
Intracellular Space
Connective Tissue
Adipose Tissue
Adipose Tissue, White
Abdominal Fat
Subcutaneous Fat, Abdominal
Subcutaneous Fat
Subcutaneous Fat, Abdominal
Bone and Bones
Bone Matrix
Cartilage
Elastic Tissue
Granulation Tissue
Cicatrix
Subcutaneous Tissue
Epithelium
Basement Membrane
Endothelium
Endothelium, Vascular
Tunica Intima
Epidermis
Epithelium, Corneal
Exocrine Glands
Lacrimal Apparatus
Salivary Glands
Parotid Gland
Salivary Ducts
Salivary Glands, Minor
Submandibular Gland
Sweat Glands
Lymphoid Tissue
Germinal Center
Dendritic Cells, Follicular
Lymph Nodes
Germinal Center
Dendritic Cells, Follicular
Palatine Tonsil
Peyer's Patches
Spleen
Thymus Gland
Membranes
Basement Membrane
Extraembryonic Membranes
Allantois
Chorion
Chorionic Villi
Mucous Membrane
Gastric Mucosa
Intestinal Mucosa
Enterocytes
Mouth Mucosa
Respiratory Mucosa
Nasal Mucosa
Serous Membrane
Pericardium
Pleura
Muscles
Muscle, Smooth
Muscle, Smooth, Vascular
Tunica Media
Muscle, Striated
Muscle, Skeletal
Muscle Fibers, Skeletal
Myocardium
Nerve Tissue
Myelin Sheath
Cells
Antibody-Producing Cells
B-Lymphocytes
B-Lymphocyte Subsets
Plasma Cells
Antigen-Presenting Cells
Dendritic Cells
Langerhans Cells
Dendritic Cells, Follicular
Blood Cells
Blood Platelets
Erythrocytes
Erythrocyte Membrane
Reticulocytes
Leukocytes
Granulocytes
Basophils
Eosinophils
Neutrophils
Leukocytes, Mononuclear
Cytokine-Induced Killer Cells
Killer Cells, Lymphokine-Activated
T-Lymphocytes, Cytotoxic
Lymphocytes
Killer Cells, Natural
Killer Cells, Lymphokine-Activated
Lymphocyte Subsets
B-Lymphocyte Subsets
T-Lymphocyte Subsets
T-Lymphocytes, Cytotoxic
T-Lymphocytes, Helper-Inducer
Th1 Cells
Th2 Cells
T-Lymphocytes, Regulatory
B-Lymphocytes
B-Lymphocyte Subsets
Plasma Cells
T-Lymphocytes
CD4-Positive T-Lymphocytes
T-Lymphocytes, Helper-Inducer
Th1 Cells
Th2 Cells
T-Lymphocytes, Regulatory
CD8-Positive T-Lymphocytes
T-Lymphocytes, Cytotoxic
T-Lymphocyte Subsets
T-Lymphocytes, Cytotoxic
T-Lymphocytes, Helper-Inducer
Th1 Cells
Th2 Cells
T-Lymphocytes, Regulatory
Lymphocytes, Null
Monocytes
Bone Marrow Cells
Granulocytes
Hematopoietic Stem Cells
Myeloid Progenitor Cells
Megakaryocyte-Erythroid Progenitor Cells
Erythroid Precursor Cells
Erythroblasts
Megakaryocytes
Monocytes
Reticulocytes
Cells, Cultured
Cell Line
Cell Line, Transformed
COS Cells
Cell Line, Tumor
HeLa Cells
HL-60 Cells
Jurkat Cells
K562 Cells
U937 Cells
CHO Cells
L Cells (Cell Line)
3T3 Cells
NIH 3T3 Cells
Clone Cells
Hybridomas
Hybrid Cells
Hybridomas
Spheroids, Cellular
Tumor Cells, Cultured
Cell Line, Tumor
HeLa Cells
HL-60 Cells
Jurkat Cells
K562 Cells
U937 Cells
Cells, Immobilized
Cellular Structures
Cell Membrane
Cell Membrane Structures
Intercellular Junctions
Myelin Sheath
Erythrocyte Membrane
Intracellular Membranes
Cell Surface Extensions
Axons
Microvilli
Pseudopodia
Cell Wall
Chromosomes
Chromosomes, Mammalian
Chromosomes, Human
Chromosomes, Human, 1-3
Chromosomes, Human, Pair 1
Chromosomes, Human, Pair 2
Chromosomes, Human, Pair 3
Chromosomes, Human, 4-5
Chromosomes, Human, Pair 5
Chromosomes, Human, 6-12 and X
Chromosomes, Human, Pair 6
Chromosomes, Human, Pair 7
Chromosomes, Human, Pair 8
Chromosomes, Human, Pair 9
Chromosomes, Human, Pair 11
Chromosomes, Human, 13-15
Chromosomes, Human, Pair 14
Chromosomes, Human, Pair 15
Chromosomes, Human, 16-18
Chromosomes, Human, Pair 16
Chromosomes, Human, Pair 17
Chromosomes, Human, Pair 18
Chromosomes, Human, 21-22 and Y
Chromosomes, Human, Pair 22
Chromosomes, Human, Y
Sex Chromosomes
X Chromosome
Y Chromosome
Chromosomes, Human, Y
Extracellular Space
Extracellular Fluid
Extracellular Matrix
Inclusion Bodies
Inclusion Bodies, Viral
Intranuclear Inclusion Bodies
Intracellular Space
Cell Nucleus
Cell Nucleus Structures
Intranuclear Space
Chromosomes
Chromosome Structures
Centromere
Chromatin
Nucleosomes
Telomere
Spliceosomes
Micronuclei, Chromosome-Defective
Cytoplasm
Cytoplasmic Structures
Cytoplasmic Granules
Microbodies
Cytoskeleton
Actin Cytoskeleton
Intermediate Filaments
Microtubules
Organelles
Cell Nucleus
Micronuclei, Chromosome-Defective
Cytoplasmic Vesicles
Cytoplasmic Granules
Microbodies
Lysosomes
Transport Vesicles
Endoplasmic Reticulum
Golgi Apparatus
Mitochondria
Mitochondria, Liver
Mitochondria, Muscle
Ribosomes
Cytosol
Intracellular Fluid
Cytosol
Subcellular Fractions
Cell-Free System
Intracellular Fluid
Cytosol
Intracellular Membranes
Microsomes
Mitochondria
Mitochondria, Liver
Mitochondria, Muscle
Connective Tissue Cells
Adipocytes
Chondrocytes
Fibroblasts
COS Cells
L Cells (Cell Line)
3T3 Cells
NIH 3T3 Cells
Macrophages
Epithelioid Cells
Histiocytes
Macrophages, Alveolar
Macrophages, Peritoneal
Osteoclasts
Mast Cells
Osteoblasts
Osteocytes
Stromal Cells
Endocrine Cells
Trophoblasts
Epithelial Cells
CHO Cells
Dendritic Cells
Langerhans Cells
Endothelial Cells
Enterocytes
HeLa Cells
Hepatocytes
Keratinocytes
Erythroid Cells
Erythrocytes
Erythroid Precursor Cells
Erythroblasts
K562 Cells
Reticulocytes
Eukaryotic Cells
Germ Cells
Spermatozoa
Giant Cells
Muscle Cells
Muscle Fibers, Skeletal
Myocytes, Smooth Muscle
Myeloid Cells
Granulocytes
Basophils
Eosinophils
Granulocyte Precursor Cells
HL-60 Cells
Neutrophils
Macrophages
Epithelioid Cells
Histiocytes
Macrophages, Alveolar
Macrophages, Peritoneal
Monocyte-Macrophage Precursor Cells
U937 Cells
Osteoclasts
Monocytes
Monocyte-Macrophage Precursor Cells
U937 Cells
Myeloid Progenitor Cells
Granulocyte-Macrophage Progenitor Cells
Monocyte-Macrophage Precursor Cells
U937 Cells
Neuroglia
Astrocytes
Oligodendroglia
Myelin Sheath
Schwann Cells
Myelin Sheath
Neurons
Autonomic Fibers, Postganglionic
Sympathetic Fibers, Postganglionic
Axons
Nerve Fibers, Myelinated
Myelin Sheath
Neurons, Afferent
Hair Cells, Auditory
Hair Cells, Auditory, Outer
Hair Cells, Vestibular
Posterior Horn Cells
Retinal Neurons
Photoreceptor Cells
Photoreceptor Cells, Vertebrate
Sensory Receptor Cells
Chemoreceptor Cells
Mechanoreceptors
Neuroepithelial Cells
Hair Cells, Auditory
Hair Cells, Auditory, Outer
Hair Cells, Vestibular
Nociceptors
Photoreceptor Cells
Photoreceptor Cells, Vertebrate
Neurons, Efferent
Motor Neurons
Phagocytes
Macrophages
Epithelioid Cells
Histiocytes
Macrophages, Alveolar
Macrophages, Peritoneal
Monocytes
Neutrophils
Stem Cells
Hematopoietic Stem Cells
Myeloid Progenitor Cells
Megakaryocyte-Erythroid Progenitor Cells
Erythroid Precursor Cells
Multipotent Stem Cells
Fluids and Secretions
Bodily Secretions
Bile
Gastric Juice
Gastric Acid
Milk
Milk, Human
Saliva
Sputum
Sweat
Tears
Body Fluids
Blood
Fetal Blood
Plasma
Serum
Immune Sera
Antilymphocyte Serum
Body Fluid Compartments
Body Water
Extracellular Fluid
Aqueous Humor
Lymph
Plasma
Synovial Fluid
Intracellular Fluid
Urine
Exudates and Transudates
Gingival Crevicular Fluid
Feces
Hyalin
Animal Structures
Comb and Wattles
Embryo, Nonmammalian
Chick Embryo
Forelimb
Carpus, Animal
Hindlimb
Stifle
Tarsus, Animal
Stomatognathic System
Cheek
Jaw
Mandible
Mandibular Condyle
Masticatory Muscles
Masseter Muscle
Mouth
Dentition
Periodontium
Gingiva
Periodontal Ligament
Tooth Components
Dental Pulp Cavity
Dentin
Lip
Mouth Mucosa
Salivary Glands
Parotid Gland
Salivary Ducts
Salivary Glands, Minor
Submandibular Gland
Pharynx
Nasopharynx
Oropharynx
Palatine Tonsil
Temporomandibular Joint
Temporomandibular Joint Disc
Hemic and Immune Systems
Blood
Blood Cells
Blood Platelets
Erythrocytes
Erythrocyte Membrane
Reticulocytes
Leukocytes
Granulocytes
Basophils
Eosinophils
Neutrophils
Leukocytes, Mononuclear
Cytokine-Induced Killer Cells
Killer Cells, Lymphokine-Activated
T-Lymphocytes, Cytotoxic
Lymphocytes
Killer Cells, Natural
Killer Cells, Lymphokine-Activated
Lymphocyte Subsets
B-Lymphocyte Subsets
T-Lymphocyte Subsets
T-Lymphocytes, Cytotoxic
T-Lymphocytes, Helper-Inducer
Th1 Cells
Th2 Cells
T-Lymphocytes, Regulatory
B-Lymphocytes
B-Lymphocyte Subsets
Plasma Cells
T-Lymphocytes
CD4-Positive T-Lymphocytes
T-Lymphocytes, Helper-Inducer
Th1 Cells
Th2 Cells
T-Lymphocytes, Regulatory
CD8-Positive T-Lymphocytes
T-Lymphocytes, Cytotoxic
T-Lymphocyte Subsets
T-Lymphocytes, Cytotoxic
T-Lymphocytes, Helper-Inducer
Th1 Cells
Th2 Cells
T-Lymphocytes, Regulatory
Lymphocytes, Null
Monocytes
Fetal Blood
Plasma
Serum
Hematopoietic System
Bone Marrow Cells
Granulocytes
Hematopoietic Stem Cells
Myeloid Progenitor Cells
Megakaryocyte-Erythroid Progenitor Cells
Erythroid Precursor Cells
Erythroblasts
Megakaryocytes
Monocytes
Reticulocytes
Immune System
Antibody-Producing Cells
B-Lymphocytes
B-Lymphocyte Subsets
Plasma Cells
Antigen-Presenting Cells
Dendritic Cells
Langerhans Cells
Dendritic Cells, Follicular
Bone Marrow
Leukocytes
Granulocytes
Basophils
Eosinophils
Neutrophils
Leukocytes, Mononuclear
Cytokine-Induced Killer Cells
Killer Cells, Lymphokine-Activated
T-Lymphocytes, Cytotoxic
Lymphocytes
Killer Cells, Natural
Killer Cells, Lymphokine-Activated
Lymphocyte Subsets
B-Lymphocyte Subsets
T-Lymphocyte Subsets
T-Lymphocytes, Cytotoxic
T-Lymphocytes, Helper-Inducer
Th1 Cells
Th2 Cells
T-Lymphocytes, Regulatory
B-Lymphocytes
B-Lymphocyte Subsets
Plasma Cells
T-Lymphocytes
CD4-Positive T-Lymphocytes
T-Lymphocytes, Helper-Inducer
Th1 Cells
Th2 Cells
T-Lymphocytes, Regulatory
CD8-Positive T-Lymphocytes
T-Lymphocytes, Cytotoxic
Jurkat Cells
T-Lymphocyte Subsets
T-Lymphocytes, Cytotoxic
T-Lymphocytes, Helper-Inducer
Th1 Cells
Th2 Cells
T-Lymphocytes, Regulatory
Lymphocytes, Null
Monocytes
Lymphatic System
Lymph
Lymphatic Vessels
Thoracic Duct
Lymphoid Tissue
Germinal Center
Dendritic Cells, Follicular
Lymph Nodes
Germinal Center
Dendritic Cells, Follicular
Palatine Tonsil
Peyer's Patches
Spleen
Thymus Gland
Mast Cells
Phagocytes
Macrophages
Epithelioid Cells
Histiocytes
Macrophages, Alveolar
Macrophages, Peritoneal
Monocytes
Neutrophils
Mononuclear Phagocyte System
Dendritic Cells
Langerhans Cells
Macrophages
Epithelioid Cells
Histiocytes
Macrophages, Alveolar
Macrophages, Peritoneal
Monocytes
Embryonic Structures
Embryo, Mammalian
Blastocyst
Trophoblasts
Extraembryonic Membranes
Allantois
Chorion
Chorionic Villi
Embryo, Nonmammalian
Chick Embryo
Fetus
Fetal Blood
Umbilical Cord
Umbilical Veins
Germ Layers
Mesoderm
Placenta
Chorionic Villi
Trophoblasts
Integumentary System
Hair
Nails
Skin
Epidermis
Sweat Glands
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