Page 1094 - The Toxicology of Fishes

IB
P

SV
HPV
A
L V
Ga

FIGURE 7.3 Hematoxylin and eosin stain of section through adult medaka (Oryzias latipes). Rostral structures are oriented
toward the right side of the field; dorsal is top and ventral bottom. Parasaggital section shows portions of the abdominal
cavity, pericardial cavity, branchial chamber, and pharynx. A, entry to aorta; Ga, gill arch with primary lamellae attached;
HPV, hepatic portal vein in liver hilus; IB, intestinal bulb; L, liver; P, pharyngeal mucosa with teeth; SV, sinus venosus; V,
ventricle. See micron bar for magnification.

P
SV

A
HV
L
V VA

FIGURE 7.4 (A) Stain and orientation are identical to Figure 7.3. A, atrium; HV, hepatic vein conducting blood from liver
to sinus venosus (SV); L, liver; P, pharynx; V, ventricle; VA, ventral aorta. Melanin is in parietal pericardium and parietal
peritoneum. See micron bar for magnification. (B). Section of adult female liver shows basophilic cytoplasm overlying
endoplasmic reticulum (purple areas of hepatocytes). Large vacuoles are fat. This appearance is that of the reproductively
active female with vitellogenin production. T, hepatic tubule formations.