The cause of less negative RMP of SA node is that the cell membranes of the sinus fibers are naturally leaky to sodium and calcium ions.

TLS Online TPP Program

#Id: 4757

#Unit 5. Developmental Biology

Embryos from homozygous skn-1-deficient mothers lack both pharyngeal mesoderm & endoderm derivatives of EMS.

TLS Online TPP Program

#Id: 5919

#Unit 3. Fundamental Processes

This is equivalent to nick translation, except that the new DNA replaces a stretch of RNA rather than a segment of DNA.

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#Id: 9376

#Unit 11. Evolution and Behavior

Behavior contributes to the different survival and reproduction of organisms.

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#Id: 5784

#Unit 7. System Physiology – Animal

Basolateral membranes of thyrocytes contain a symporter Na+/I –symporter (NIS) 

TLS Online TPP Program

#Id: 1893

#Unit 4. Cell Communication and Cell Signaling

Superantigens

Viral or bacterial proteins that bind simultaneously to the Vβ domain of a T-cell receptor and to the α chain of a Class II MHC molecule