| juxtacrine | A mode of hormone action that requires the cell producing the effector to be in direct contact with the cell containing the appropriate receptor. Origin: L. Juxta, close to, + G. Krino, to separate (05 Mar 2000) |
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| juxtacrine activation | Activation of target cells by membrane anchored growth factors, also used for activation of leucocytes by PAF bound to endothelial cell surface. (18 Nov 1997) |