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02-11-2022
Biology

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a scientist is searching for chemical compounds involved in embryonic limb development. he discovers a new compound that is transiently expressed in the limbs and only seems to affect cells in its immediate vicinity (up to a few cell lengths away). how should the scientist classify this chemical compound? as a steroid hormone as a paracrine factor as a peptide hormone as a neurotransmitter as an amine hormone

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