TLS Online TPP Program

#Id: 1885

#Unit 4. Cell Communication and Cell Signaling

Development of T cells from hematopoietic stem cells on bone marrow stromal cells expressing the Notch ligand.

TLS Online TPP Program

#Id: 7597

#Unit 5. Developmental Biology

The zona pellucida in mammals plays a role analogous to that of the vitelline envelope in invertebrates; the zona, however, is a far thicker and denser structure than the vitelline envelope

TLS Online TPP Program

#Id: 516

#Unit 2. Cellular Organization

Escherichia coli K-12 is 4.6Mb genome with 4400 genes so gene density 950 genes/Mb.

TLS Online TPP Program

#Id: 9299

#Unit 4. Cell Communication and Cell Signaling

Rod cells sense light with the aid of a light-sensitive GPCR called rhodopsin.

TLS Online TPP Program

#Id: 7408

#Unit 5. Developmental Biology

The engrailed gene is activated in cells that have high levels of the Even-skipped, Fushi tarazu, or Paired & repressed in cells that have high levels of Odd-skipped, Runt, or Sloppy-paired