Fig. 4

Bouin’s fixed fetuses for visceral examination (1000 mg/kg). A Un-sectioned fetus showing sites where sections made; B coronal section showing normal palate (p), eye ball (e) and brain ventricle; C coronal section of nasal cavity showing nasal septum (s), nasal conchae (c) and palate (p); D a section made through the neck showing normal 1-esophagus, 2-trachea, and 3-thyroid; E heart showing superior vena cava (SV), aorta (A), coronary artery (ca) F a section through the chest showing normal interventricular septum (s) and lungs (l) G intact diaphragm, H a section made through the abdomen showing normal visceral organs including the liver (l) kidney (k), stomach (s); I section showing pelvic visceral organs (doted)