Figure 2
From: Sperm protein 17 is expressed in the sperm fibrous sheath
Transmission electron microphotographs of human ejaculated spermatozoa collected from fertile donors. A: Araldite transverse section; B and C: Sp17 immunogold labeling in Lowycril transverse (B) and longitudinal (C) sections. Immunoreactivity was restricted to the fibrous sheath and no gold particles were localized in the axonema or in outer dense fibers. Original magnification: A: 29000; B and C: 25000×.