| Screening of Tanzanian medicinal plants for anti-Candida activity DKB Runyoro, MIN Matee, OD Ngassapa, CC Joseph, ZH Mbwambo BMC complementary and alternative medicine 6, 1-10, 2006 | 312 | 2006 |
| Chemical composition and antimicrobial activity of the essential oils of four Ocimum species growing in Tanzania D Runyoro, O Ngassapa, K Vagionas, N Aligiannis, K Graikou, I Chinou Food chemistry 119 (1), 311-316, 2010 | 274 | 2010 |
| Screening of some Tanzanian medicinal plants from Bunda district for antibacterial, antifungal and antiviral activities SM Maregesi, L Pieters, OD Ngassapa, S Apers, R Vingerhoets, P Cos, ... Journal of ethnopharmacology 119 (1), 58-66, 2008 | 258 | 2008 |
| Ethnopharmacological survey of the Bunda district, Tanzania: Plants used to treat infectious diseases SM Maregesi, OD Ngassapa, L Pieters, AJ Vlietinck Journal of ethnopharmacology 113 (3), 457-470, 2007 | 208 | 2007 |
| Composition and antimicrobial activity of the essential oils of three Satureja species growing in Tanzania K Vagionas, K Graikou, O Ngassapa, D Runyoro, I Chinou Food Chemistry 103 (2), 319-324, 2007 | 130 | 2007 |
| Medicinal plants used by Tanzanian traditional healers in the management of Candida infections DKB Runyoro, OD Ngassapa, MIN Matee, CC Joseph, MJ Moshi Journal of Ethnopharmacology 106 (2), 158-165, 2006 | 130 | 2006 |
| Chemical composition and in vitro antimicrobial activity of the essential oils of two Helichrysum species from Tanzania C Bougatsos, O Ngassapa, DKB Runyoro, IB Chinou Zeitschrift für Naturforschung C 59 (5-6), 368-372, 2004 | 115 | 2004 |
| Evaluation of the potential cancer chemotherapeutic efficacy of natural product isolates employing in vivo hollow fiber tests Q Mi, D Lantvit, E Reyes-Lim, H Chai, W Zhao, IS Lee, S Peraza-Sánchez, ... Journal of natural products 65 (6), 842-850, 2002 | 95 | 2002 |
| Quinone-methide triterpenes and salaspermic acid from Kokoona ochracea O Ngassapa, DD Soejarto, JM Pezzuto, NR Farnsworth Journal of natural products 57 (1), 1-8, 1994 | 86 | 1994 |
| Chemical analysis of edible aromatic plants growing in Tanzania K Vagionas, O Ngassapa, D Runyoro, K Graikou, O Gortzi, I Chinou Food chemistry 105 (4), 1711-1717, 2007 | 80 | 2007 |
| Biopiracy of natural products and good bioprospecting practice T Efferth, M Banerjee, NW Paul, S Abdelfatah, J Arend, G Elhassan, ... Phytomedicine 23 (2), 166-173, 2016 | 67 | 2016 |
| Antimicrobial activity of Tanzanian chewing sticks against oral pathogenic microbes MN Khan, O Ngassapa, MIN Matee Pharmaceutical Biology 38 (3), 235-240, 2000 | 51 | 2000 |
| Medicinal plants used by Rwandese traditional healers in refugee camps in Tanzania DC Ramathal, OD Ngassapa Pharmaceutical Biology 39 (2), 132-137, 2001 | 49 | 2001 |
| Curricular transformation of health professions education in Tanzania: The process at Muhimbili University of Health and Allied Sciences (2008–2011) OD Ngassapa, EE Kaaya, MV Fyfe, EF Lyamuya, DC Kakoko, ... Journal of Public Health Policy 33, S64-S91, 2012 | 45 | 2012 |
| Lupane Derivatives from Lophopetalum wallichii with Farnesyl Protein Transferase Inhibitory Activity S Sturm, RR Gil, HB Chai, OD Ngassapa, T Santisuk, V Reutrakul, ... Journal of natural products 59 (7), 658-663, 1996 | 45 | 1996 |
| Chemical analysis and antimicrobial activity of essential oils from the aromatic plants artemisia afra jacq. and leonotis ocymifolia (Burm. F.) iwarsson var. raineriana … K Vagionas, K Graikou, IB Chinou, D Runyoro, O Ngassapa Journal of Essential Oil Research 19 (4), 396-400, 2007 | 42 | 2007 |
| Composition and antimicrobial activity of essential oils of two populations of Tanzanian Lippia javanica (Burm. f.) Spreng. (Verbenaceae) O Ngassapa, DKB Runyoro, E Harvala, IB Chinou Flavour and fragrance journal 18 (3), 221-224, 2003 | 40 | 2003 |
| New cytotoxic lupane lactones from Kokoona ochracea OD Ngassapa, DD Soejarto, CT Che, JM Pezzuto, NR Farnsworth Journal of natural products 54 (5), 1353-1359, 1991 | 32 | 1991 |
| Isolation of echinocystic acid-3-O-sulfate, a new triterpene, from Tetrapleura tetraptera, and evaluation of the mutagenic potential of molluscicidal extracts and isolates O Ngassapa, CWW Beecher, JM Pezzuto, NR Farnsworth, TO Henderson, ... Journal of natural products 56 (11), 1872-1877, 1993 | 31 | 1993 |
| Screening of plants used as traditional anticancer remedies in mkuranga and same districts, Tanzania, using brine shrimp toxicity bioassay DZ Matata, OD Ngassapa, F Machumi, MJ Moshi Evidence‐Based Complementary and Alternative Medicine 2018 (1), 3034612, 2018 | 28 | 2018 |
