CSB328H1 Chapter Notes - Chapter 3: The Molecules, Chondrocyte, Stat1
22 Oct 2013
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Different cell types form organized structures must be ordered to take different shapes and make different connections -> morphogenesis. 1850a, robert remak formulated the cell theory and showdd that all the different cells in the bosy are the mitotic products of a single cell, the fertilized egg. The cells of an embryo are either epithelial or mesechymal: epithelial cells adhere to one another and can form sheets and tubes, mesenchymal cells often migrate individually and form extensive ecm that keep the individual cells separate. 3 behaviours requiring cell-cell communication via the cell surface: cell adhesion, cell migration, and cell signaling. Morphogenesis focuses on the cell membrane and its interactions with the peripheral cytoplasm. When the ph of the soln was normalized, the cells adhered -> aggregates. By using embryos from species having cells of different sizes and colours, t&h were able to follow the behaviour of the recombined cells: results:
