Fig. 2
From: The niche of One Health approaches in Lassa fever surveillance and control

Different aspects of a Mastomys natalensis rodent (a–d). Speciments were captured during a LASV ecological survey in Nigeria, 2015. Images c and d show the distinctive high number of nipples (8–12 pairs) present in mature, lactating females. Photo credits: Olayemi et al., Nigeria, 2015