%0 Generic %D 2008 %T Tissue P systems with cell division %A Gheorghe Paun %A Mario J. Pérez-Jiménez %A Agustín Riscos-Núñez %C Oradea, Romania %I Agora University Editing House - CCC Publications %K cell division rule %K NP-complete problem %K SAT problem %K Tissue-like P systems %N 3 %P 295-303 %U http://www.journal.univagora.ro/?page=article_details&id=139 %V III %X In tissue P systems several cells (elementary membranes) communicate through symport/antiport rules, thus carrying out a computation. We add to such systems the basic feature of (cell--like) P systems with active membranes -- the possibility to divide cells. As expected (as it is the case for P systems with active membranes), in this way we get the possibility to solve computationally hard problems in polynomial time; we illustrate this possibility with SAT problem.