BIO230H1 Lecture 16: Lecture 16,17review.docx
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BIO230H1 Full Course Notes
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In adults, multicellular development continually occurs from stem cells e. g. skin epithelia. Adults can also initiate new developmental processes e. g. mammary gland epithelia. In the final steps, the grey cells are trophectoderm and the green things are zone pellucida. 3. formation of a ball of cells the > Epithelial-to-mesenchymal transitions are tightly regulated during normal development e. g. a transplant experiment showing cells migrating. Epithelial to mesenchymal transition are tightly regulated during normal from somites development to specifically form. Different somites become different things (so each row will differentiate into different things) e. g. metastases: cancerous tumors that invade other tissues. Epithelial-to-mesenchymal transitions are tightly regulated during normal development e. g. a transplant experiment showing cells migrating from somites to specifically form limb muscles. As we move from left to right, we are going through invagination/involution. (curl,curl,curl, froms the brain) Cells undergo invagination/involution(cid:224) curl curl curl then becomes mesoderm cells. e. g. neural tube development from the ectoderm in vertebrates.
