| A | B |
|---|
| Para-aortic LP Splanchnic Mesoderm | Hematopoietic stem cells (@ week 5) that seed: Thymus (just before birth), Peyer’s Patches (after birth), Lingual tonsil (after birth), Palatine tonsils (after birth),Pharyngeal tonsils (after birth),Appendix (after birth), Spleen (Wk 10), Bone Marrow (Wk 12), Liver (Wk 6) |
| LP Splanchnic Mesoderm | GALT, stroma of appendix, sroma of peyer's patches, liver; stroma and parenchyma of spleen; lymph nodes |
| LP Somatic Mesoderm | GALT, Lymph nodes; dermis: body trunk |
| Cranial Ectomesenchyme | Dermis: head · Dentin, pulp cavity of teeth · Thymus · Lingual tonsil · Palatine tonsil (inner) · Stroma of pharyngeal tonsils |
| Neural Crest | Teeth pulp cavity; teeth innervation; pigment of skin, hair and retina ( melanocytes) |
| Surface Ectoderm | hair, eyebrows, eyelashes, fingernails, toenails, teeth enamel, epidermis, pharyngeal and lingual tonsils of oral cavity |
| Dermatomal Somatic Mesoderm | Dermis: back over vertebral columns; GALT |
| Appendicular Ectomesenchyme | Dermis: appendages; GALT |
| Scleretomal Somitic Mesoderm | Lymph nodes |
| Extra-Embryonic LP Splanchnic Mesoderm | Hofbauer cells (@ week 3) |
| Dermatomal Somitic Mesoderm | Lymph nodes |
| Endoderm | Parenchyma of appendix and liver; lining of 3rd, 4th pharyngeal pouches-thymus; lining of 2nd pharyngeal pouch-palantine tonsil |
