Pancreatic B cells contain GABA, and coincident with the increased insulin secretion produced by hyperglycemia, GABA is released and acts on the A cells by activating GABA A receptors

TLS Online TPP Program

#Id: 1482

#Unit 4. Cell Communication and Cell Signaling

Neurofibromatosis, a benign tumor of the sheath cells that surround nerves, is caused by loss of both alleles of NF1, which encodes a RAS GAP-type protein.

TLS Online TPP Program

#Id: 5435

#Unit 7. System Physiology – Animal

The entry of Na+ causes the opening of more voltage- gated Na+ channels and further depolarization, setting up a positive feedback loop .

TLS Online TPP Program

#Id: 1589

#Unit 5. Developmental Biology

Primitive Groove

A depression that forms within the primitive streak that serves as an opening through which migrating cells pass into the deep layers of the embryo.

TLS Online TPP Program

#Id: 4650

#Unit 13. Methods in Biology

BrdU can CAUSE light induced cell death. 

TLS Online TPP Program

#Id: 7058

#Unit 11. Evolution and Behavior

The Forces of Evolution

mutation, 

genetic drift

gene flow or migration

selection.