A cluster of tumour cells that produces and secretes growth factors to induce surrounding cells to grow and divide is showing which type of cell-to-cell signalling?
A) autocrine
B) paracrine
C) endocrine
D) neuroendocrine

Question

Quizplus · Accepted Answer

A cluster of tumour cells that produces and secretes growth factors to induce surrounding cells to grow and divide is showing paracrine signalling, where the signalling molecules affect nearby cells. Autocrine signalling affects the same cells that produced the signalling molecules, endocrine signalling affects distant cells through the bloodstream or lymphatic system, and neuroendocrine signalling involves the release of hormones by nerve cells to regulate target cells.

A Cluster of Tumour Cells That Produces and Secretes Growth