Heparin and penicillamine–hypotaurine–epinephrine (PHE) solution during bovine in vitro fertilization procedures impair the quality of spermatozoa but improve normal oocyte fecundation and early embryonic development - Gonçalves, F. S; Barreto, L. S. S; Arruda, Rubens Paes de; Perri, Silvia Helena Venturoli; Mingoti, Gisele Zoccal (In Vitro Cellular & Developmental Biology - Animal, 2014)