Matchuenkam, S. R., Yadang, F. S., Zouheira, D., Tchamgoue, A. D., & Agbor, G. A. (2026). Evaluation of the effects of Piper nigrum and Costus afer extracts combination against obesity and streptozotocin-induced diabetes in rats. Journal of the Cameroon Academy of Sciences, 23(2), 113–128. https://doi.org/10.4314/jcas.v23i2.1