Antimicrobial Effect of Rheum ribes and Tio2 Nps on Bacterial Biofilm in Escherichia Coli Journal title: IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS) Authors: Hind Hussein Obaid, Zainab Zamel Khalaf, Heba Khaleel Tawfeeq²,, RoaaThaer Sabri, Zeina Abdul-Qader... Subject(s):