Ranaweera BVLR, Abeysekera AM, Weerasena OVDSJ, Handunnetti SM. Expression of co-stimulatory molecules involved in T-cell dependent B-cell activation in rats orally treated with a polyherbal formulation (OP06). Proceeding of the 11^th Annual Scientific Sessions of Institute of Biochemistry, Molecular Biology & Biotechnology (IBMBB), University of Colombo. 12^th July 2019, pp:20