spermatozoa from the testis and cauda epididymidis were solubilized by detergent treatment and electrophoresis on sds polyacrylamide gels revealed that the relative amounts of 13 detergent-extractable proteins decreased during passage of spermatozoa through the epididymis , 6 increased , whilst the remainder showed little or no change .
C0228024
cauda epididymidis
C0014533
epididymis