Multiple choice Which of the following sentence is not true about Phorbol esters? Phorbol esters activate tumor formation Phorbol esters persist in cells for a long time Presence of phorbol esters leads to activation of protein kinase C at physiological calcium ion concentration Phorbol esters are structurally similar to Diacylglycerol Phorbol esters induce apoptosis Reveal answer Fill a bubble to check yourself E Correct answer Explanation Phorbol esters induce cell proliferation.