Which experimental technique would be useful in determining whether a particular chemical signal is a juxtacrine or a paracrine signal?
A) Chemical analysis of the signal molecule
B) Observations of the behavior of single cells
C) Gene expression analysis
D) Analysis of extracellular fluid surrounding cells
E) Analysis of blood from nearby capillaries

Question

Quizplus · Accepted Answer

Juxtacrine signaling involves direct contact between cells, while paracrine signaling involves the release of signals into the extracellular fluid to affect nearby cells. Analyzing the extracellular fluid can help determine if the signal is released into the fluid (paracrine) or not (juxtacrine).

Which Experimental Technique Would Be Useful in Determining Whether a Particular