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TLS Online TPP Program

#Id: 5173

Blood consists of a protein-rich fluid known as plasma, in which suspended cellular elements are:  white blood cells, red blood cells, and platelets.


#Unit 7. System Physiology – Animal #Blood and circulation #Part B Pointers
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TLS Online TPP Program

#Id: 7161

#Unit 5. Developmental Biology

The mechanism for “bottom-up” specification of germ layers of the frog embryo resides in a set of mRNAs that are tethered to the vegetal cortex
TLS Online TPP Program

#Id: 7162

#Unit 5. Developmental Biology
TLS Online TPP Program

#Id: 7163

#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.
TLS Online TPP Program

#Id: 7164

#Unit 5. Developmental Biology

One of the genes activated by VegT protein encodes the Sox17 transcription factor.
TLS Online TPP Program

#Id: 7165

#Unit 5. Developmental Biology

Sox17 
TLS Online TPP Program

#Id: 7166

#Unit 5. Developmental Biology

Another set of early genes activated by VegT encodes Nodal paracrine factors that instruct the cell layers above them to become mesoderm