Acta Veterinaria Scandinavica 2008, 50:41 http://www.actavetscand.com/content/50/1/41 LFiigghutrmeic2roscopy of Thai native crossbreed stallion sperm after eosin/nigrosin staining Light microscopy of Thai native crossbreed stallion sperm after eosin/nigrosin staining; a – normal sperm; b – pear shaped head; c – narrow head with abnormal midpiece; d – acrosomal defect with abnormal midpiece; e – coiled tail below head; f – terminal coiled tail; g – proximal cytoplasmic droplet and h – distal cytoplasmic droplet (1000×). Page 5 of 9 (page number not for citation purposes) a c e g b d f h