Nurturing Life Sciences
#Id: 9306
There are about 90 million rod cells in the human retina, and each contains about 4x107 molecules of rhodopsin that are very densely packed in the membrane disks.
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#Unit 5. Developmental Biology
The mRNA for the transcription factor VegT, which becomes apportioned to the vegetal cells during cleavage. VegT is critical in generating both the endodermal and mesodermal lineages.
#Id: 7164
One of the genes activated by VegT protein encodes the Sox17 transcription factor.
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Sox17
#Id: 7166
Another set of early genes activated by VegT encodes Nodal paracrine factors that instruct the cell layers above them to become mesoderm
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#Id: 7168
Nieuwkoop center
Dorsalmost vegetal cells of the blastula, which are capable of inducing the organizer dorsal vegetal cells can induce animal cells to become dorsal mesodermal tissue)
