In the present study, we describe the proteome of porcine cauda epididymis fluid and spermatozoa by means of Multidimensional Protein Identification Technology (MudPIT). Ten sexually mature healthy boars were surgically castrated and epididymides were dissected to obtain the cauda epididymal content. Polled protein extracts of cauda epididymal fluid (CEF) and spermatozoa (CESperm) were loaded in an Agilent 1100 quaternary HPLC and peptides eluted from the microcapillary column were electro-sprayed directly into a LTQ Orbitrap XL mass spectrometer.
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