|Cow Bos Taurus
|Bahr GF, Zeitler E. Study of bull spermatozoa. Quantitative electron microscopy. J Cell Biol. 1964 May21:175-89. p.183 table IIPubMed ID14153480
image of a straight spermatozoon on the electron
micrograph is moved through a slot-shaped aperture
of the photometer while the cross-sectional transmission
is concurrently recorded. Simple planimetry of
such recordings permits the derivation of the mass
of any desired part of the object.
|More than 150 measurements from each animal yield
very close values of the median masses, which,
being within the error limits of the standardization,
can be considered as identical. Above is median mass for one bull. Another bull had median sperm mass of 1.335E-11 grams.