-19- 
RTLA 2441. South African clawed frog, Xenopus laevis 
Materialt Two microslides of liver — animal experimentally 
exposed to DMN 
Habitat: England, Nottingham: The University of Nottingham, 
Medical School, Department of Human Morphology 
Diagnosis: Liver with clear cysts 
Submitter: R. H. Clothier and M. Balls 
RTLA 2442. Brown trout, Salmo trutta 
Material: Distal segment of a liver lobe 
Habitat: New Zealand: South Island, Eglinton River 
Diagnosis: Cholangiocarcinoma 
Submitter: N. C. Boustead 
RTLA 2443. Rainbow trout, Salmo gairdneri 
Material: Right, ventral, transverse hemisphere, including 
pelvic fin, with a round lesion 
Habitat: New Zealand: North Island, Lake Taupo 
Diagnosis: Primitive rhabdomyoblastoma 
Submitter: N. C. Boustead 
RTLA 2444-2450. 
Material: 
Diagnosis: 
Submitter: 
Mountain whitefish, Prosopium williamsoni 
RTLA 2444-2447 - one microslide each; RTLA 2448- 
2450 - assorted tissues 
Metaplastic glandular response of hepatocytes as¬ 
sociated with chronic mycobacterial inflammatory 
lesions 
C. E. Smith 
RTLA 2451. Atlantic tomcod, Microgadus tomcod 
Material: One microslide 
Diagnosis: Hepatocellular carcinoma 
Submitter: C. E. Smith 
RTLA 2452. Atlantic tomcod, Microgadus tomcod 
Material: One microslide 
Diagnosis: Incipient hepatocellular carcinoma 
Submitter: C. E. Smith 
RTLA 2453. Tiger salamander, Ambystoma tigrinum 
Material: Two lungs: left and right lobes 
Habitat: Texas, Hurlwood: Lubbock County, Reese Air Force 
Base sewage lagoon 
Diagnosis: Left lobe - pulmonary edema, fibrosis and overdis¬ 
tension of air sacs; right lobe - "normal" 
Submitter: R. S. Anderson 
RTLA 2454. Leatherjacket, Acantholuteres brownii 
Material: Four pieces of musculature with attached black 
skin; 2 microslides; 2 paraffin blocks; reprint 
Habitat: South Australia: Flinders Island 
Diagnosis: Ossifying fibrosarcoma arising from scale-forming 
tissue of the dermis 
