TREG can be generated both naturally, in the thymus (nTREG cells), and after induction by antigen in the periphery (iTREG cells).

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#Unit 13. Methods in Biology

Phase-contrast microscopy is suitable for observing single cells or thin cell layers.

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#Unit 2. Cellular Organization

Mitochondrial protein import requires: 

Tom proteins (Tom 20/22/70)

General import pore (Tom40)

Tim proteins (Tim23/17)

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#Unit 3. Fundamental Processes

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#Unit 13. Methods in Biology

The second advantage of gradient gels is that proteins with very similar M r values may be resolved.

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#Unit 11. Evolution and Behavior

Some people have an allele called Δ32 at the CCR5 locus in which 32 bp are deleted.

CCR5 that plays a role in inflammatory response. Unfortunately, this protein is also a key to human immunodeficiency virus (HIV) infection. The virus binds to a loop of the CCR5 protein and then enters the cell.

The missing part of the gene codes for the loop in the protein to which the virus attaches.