Uji Efektivitas in vitro Sediaan Gel Antiserum Anti-VDAC3 Sebagai Kandidat Spermisida Terhadap Motilitas, Viabilitas, dan Intergritas Sperma Ejakulat = The in vitro Effectiveness of The Anti-VDAC3 Antiserum gel as Spermicide Candidate Toward Motility, Viability, and Membrane Integrity of the Ejaculated Sperm