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** Even dead freeze-dried sperm have been effective in mice.
 
** Even dead freeze-dried sperm have been effective in mice.
 
* Abnormalities are frequent.
 
* Abnormalities are frequent.
* Power is in the hands of the operator, as it bypasses the process of selection in the female tract.
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* Power is in the hands of the operator, as it bypasses the process of [[Copulation_-Sperm_in_the_Female_Tract_-_Anatomy_%26_Physiology|selection in the female tract]].
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