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Mastomys coucha phylogeny, range, and morphology. (a) Rodent phylogeny showing the number of mammary glands for each species. (b) Mastomys range and sampling locations in Africa obtained from the International Union of Conservation red list of threatened species. The range of M. coucha is marked in yellow and Mastomys natalensis in red. (c) A picture of a M. coucha from our colony. (d) The ventral side of a M. coucha showing 16 mammary glands.
