Antischistosomal, antionchocercal and antitrypanosomal potentials of some Ghanaian traditional medicines and their constituents. oleh Emmanuella Bema Twumasi, Pearl Ihuoma Akazue, Kwaku Kyeremeh, Theresa Manful Gwira, Jennifer Keiser, Fidelis Cho-Ngwa, Adrian Flint, Barbara Anibea, Emmanuel Yeboah Bonsu, Richard K Amewu, Linda Eva Amoah, Regina Appiah-Opong, Dorcas Osei-Safo