Fig. 2
From: Sonogram of coccygeus muscle in dairy cows with different gestational ages
Sonogram of perineal tissue between sacrum and ischium bones of dairy cows with different gestational ages using transcutaneous B-mode ultrasonography: a, b non-pregnant, c, d <1 month pregnant, e, f 2–3 months pregnant, g, h postpartum, vertical scanning angles a, c, e, g, horizontal scanning angles b, d, f, h. Note: s = skin, sc = subcutaneous, cm = coccygeus muscle, p = peritoneum, arrow head = side part of coccygeus muscle