It is possible to determine whether a particular chemical signal is juxtacrine or paracrine because the molecule is not present in extracellular fluid. Juxtacrine indicates contact between cells.
Juxtacrine signals involve contact between cells, whereas paracrine signaling (e.g., retinoic acid signaling) involves nearby cells.
A chemical signal can be, for example, a given hormone or peptide that may induce a change in a near cell.
Conversely, endocrine signals are chemical signals characterized to circulate in the bloodstream in order to bind target cell receptors.
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https://brainly.com/question/24462091
Answer:
Analysis of extracellular fluid surrounding cells
Explanation:
