Positive Costimulatory Receptors: ICOS

ICOS binds to another member of the growing B7 family, ICOS-ligand (ICOS-L), which is also expressed on a subset of activated APCs.

ICOS plays a key role in maintaining the activity of already differentiated effector and memory T cells.

TLS Online TPP Program

#Id: 6517

#Unit 7. System Physiology – Animal

Phenylethanolamine-N-methyltransferase catalyzes the formation of epinephrine from norepinephrine, is found in appreciable quantities only in the brain and the adrenal medulla

TLS Online TPP Program

#Id: 4449

#Unit 13. Methods in Biology

Electron microscopy under optimal conditions provides, a resolution of 0.10 nm wavelength.

TLS Online TPP Program

#Id: 745

#Unit 3. Fundamental Processes

Additional free energy for the formation of phosphodiester bond is provided by the rapid hydrolysis of the pyrophosphate into two phosphate groups by an enzyme known as pyrophosphatase:

 

TLS Online TPP Program

#Id: 2374

#Unit 5. Developmental Biology

An anterior-to-posterior gradient of Erk signaling functions as a positive inducer of head specification

TLS Online TPP Program

#Id: 8292

#Unit 1. Molecules and their Interaction Relevant to Biology