Fig. 2
From: Reproductive consequences of an extra long-term sperm storage organ

Spermathecae phenotypes. Phase contrast images of a two and b three spermathecae phenotypes. Scale bar is 50 μm. c Fluorescent microscopy image of GFP-labeled sperm within a single spermathecae; image color is inverted to enhance visibility. Note that this is a single image from a z-stack, and thus not all sperm are in focus in this image