TY - RPRT TI - Volume regulatory function and sperm membrane dynamics as parameters for evaluating cryoprotective efficiency of a freezing extender. AU - A M Petrunkina AU - B Gröpper AU - E Töpfer-Petersen AU - A-R Günzel-Apel PY - 2005 DO - 10.1016/j.theriogenology.2004.07.006 UR - https://pubmed.ncbi.nlm.nih.gov/15725446/ ID - 15725446 ER -