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Sperm, coiled

honey bee sperm

Coiled sperm of honey bee. The sperm was first folded in half and later coiled. The left image was obtained using bright field microscopy and the right image was obtained using fluorescence microscopy with propidium iodide staining. The same sperm is shown in both images. The head of the sperm (bright red in right image) is at the bottom of the image. (scale bar = 10 micrometers)