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Biology 14 Online
OpenStudy (anonymous):

Which cells increase the permeability of blood vessels by releasing histamine?

OpenStudy (kaylaprincess):

\[Welcome!\] Injured tissue mast cells release histamine, causing the surrounding blood vessels to dilate and increase in permeability. Resource : http://www.britannica.com/EBchecked/topic/267004/histamine

OpenStudy (amriju):

Isn't it the basophils?

OpenStudy (nincompoop):

mast cell and basophil both contain histamine

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