Forensic Medicine Florence test done on dry seminal stain shows dark-brown crystals due to: September 2012, March 2013 (e) A Sperm B Dye C Spermine D Choline 💡 Explanation Florence test done on dry seminal stain shows dark-brown crystals due to: September 2012, March 2013 (e) ✓ Correct Answer: D. Choline