Stimulation of prepubertal , pubertal and adult rat testis with low-intensity pulset ultrasound - Haddad, S; Petenusci, Sérgio Olavo; Anselmo-Franci, Janete Aparecida; Lamano Carvalho, Teresa Lúcia (Archives Internationales de Physiologie, de Biochimie et de Biophysique, 1994)