The types of the intracellular mechanisms used by a given stem cell are in part the downstream net result of the extracellular stimuli in its niche.

TLS Online TPP Program

#Id: 2353

#Unit 5. Developmental Biology

If the middle slice is too narrow, there is no discernible morphogen gradient within it, and regeneration is abnormal.

TLS Online TPP Program

#Id: 9990

#Unit 4. Cell Communication and Cell Signaling

Rho GTPases are the “master builders” of the cell because they can activate an array of kinases and cytoskeletal binding proteins that remodel cytoskeletal elements to alter cell shape and movement

TLS Online TPP Program

#Id: 1618

#Unit 4. Cell Communication and Cell Signaling

Chronic inflammation causes by IL-6, TNFα, IL-1β, IL-18.

TLS Online TPP Program

#Id: 3102

#Unit 3. Fundamental Processes

An origin at which replication is initiated. It may also have a terminus at which replication stops.

TLS Online TPP Program

#Id: 2413

#Unit 3. Fundamental Processes

TRCF binds to double-stranded DNA upstream of the polymerase and uses the ATPase motor to translocate along the DNA until it encounters the stalled RNA polymerase.