Read the Wikipedia entry on the Hayflick limit and follow its references. You are actually better off as a layperson doing the thing you are objecting you - looking through materials - as it will enable you to pick the context, which you won&#x27;t if you head straight for the one line summary point.<p><a href="http:&#x2F;&#x2F;hmg.oxfordjournals.org&#x2F;content&#x2F;10&#x2F;7&#x2F;677.full" rel="nofollow">http:&#x2F;&#x2F;hmg.oxfordjournals.org&#x2F;content&#x2F;10&#x2F;7&#x2F;677.full</a><p>&quot;Telomerase activity has been found in almost all human tumors but not in adjacent normal cells.&quot;