Stewart Jamie, Gao Liying, Flaws Jodi, Mercadante Vitor, Dias Nicholas, Canisso Igor, and Lima Fabio. 2019. “Direct Effects of Nerve Growth Factor β, Purified from Bull Seminal Plasma, on Steroidogenesis and Angiogenic Markers of the Bovine Preovulatory Follicle”. Clinical Theriogenology 11 (3):443. https://clinicaltheriogenology.net/index.php/CT/article/view/10211.