What is the T-cell ligand binding B7 on a professional antigen-presenting cell?

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#Question id: 19328

#Unit 12. Applied Biology

Which one of the following is a bio microarray device?

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#Question id: 10262

#Unit 1. Molecules and their Interaction Relevant to Biology

Linus Pauling has given electronegativity as

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#Question id: 11036

#Unit 7. System Physiology – Animal

Under control conditions, flow through a blood vessel is 100 ml/min under a pressure gradient of 50 mm Hg. What would be the approximate flow through the vessel after increasing the vessel diameter to four times normal, assuming that the pressure gradient was maintained at 50 mm Hg?

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#Question id: 16954

#Unit 4. Cell Communication and Cell Signaling

match the following

A. endosteal niche	1. versatile cells that both generate bone and control the differentiation of HSCs
B. osteoblasts	2. line the blood vessels and also regulate HSC differentiation
C. reticular cells	3. send processes connecting cells to bone and blood vessels, and, unexpectedly
D. sympathetic neurons	4. can control the release of hematopoietic cells from the bone marrow.

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#Question id: 26932

#Unit 10. Ecological Principles

similar morphology when present at different geographical area shows