Autocrineadjective
(biology) (of a hormone, neuropeptide... or about its effect or action) That acts on the cell that produced it.
Autocrineadjective
denoting or relating to a cell-produced substance that has an effect on the cell by which it is secreted.
Paracrineadjective
Describing a hormone or other secretion released from endocrine cells into the surrounding tissue rather than into the bloodstream