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.

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#Id: 4322

#Unit 11. Evolution and Behavior

TLS Online TPP Program

#Id: 6220

#Unit 12. Applied Biology

Adeno-associated vectors (AAV) Adeno-associated viruses (AAVs) are a group of small, single-stranded DNA viruses. The insert size for AAV is 4.5 kb, with the advantage of long-term gene expression as they integrate into chromosomal DNA.

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#Id: 2609

#Unit 13. Methods in Biology

RACE can provide the sequence of an RNA transcript from a small known sequence within the transcript to the 5' end (5' RACE-PCR) or 3' end (3' RACE-PCR) of the RNA. 

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#Id: 7470

#Unit 4. Cell Communication and Cell Signaling

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#Id: 8573

#Unit 2. Cellular Organization

In all epithelia, keratin filaments associate with: Desmosomes (cell–cell contact)

Hemidesmosomes (cell–matrix contact)