In the forensic laboratory some samples are being examined under ultraviolet light, the doctor notices bluish white colour of the sample. Which is the most probable content of the sample?

Ref: the synopsis of forensic medicine &toxicology-Dr.K.S. Narayana reddy 28th edition pg no:236 proof of semen: the only absolute prrof of semen is the finding of atl;east one unbroken spermatozoon,or electrophoretic LDH isoenzyme detection of sperms. in the absence of spermatozoa, a stain which gives characteristic fluorescence in ultraviolet light , a high level of acid phosphatase , a high creatine phosphokinase and P30 can be considerd due to semen the fluorescence will be blue white in colour