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Richest concentration of choline in the spermatic fluid was determined by

  • A.Jhonston (1896)
  • B.Davis and Wilson (1974)
  • C.Fletcher et al (1935)
  • D.Florence (1886)

Answer: C

The key credits the determination of the richest concentration of choline in the spermatic fluid to Fletcher et al, 1935. Florence, whose name is attached to the choline periodide test for semen, is the person who introduced the test and not the one who measured the concentration, so option D is not the keyed answer. Jhonston and Davis and Wilson are other names in the list, and the key does not support them. The keyed answer is C.

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