-17- 
RTLA 
2126. South African clawed frog, Xenopus laevls 
Material: One microslide of kidney and liver tissue experimentally 
treated with N-nitrosodimethylamine 
Habitat: Laboratory 
Diagnosis: Cholangiocarcinoma, cholangiofibrosis, and hepatocel¬ 
lular carcinoma 
Submitter: V. V. Khudoley 
RTLA 2127. Grass frog, Rana temporaria 
Material: One microslide of skin growths 
Habitat: Leningrad area, USSR 
Diagnosis: Cyst adenoma of mucus or poison gland ducts 
Submitter: V. V. Khudoley 
RTLA 2128. Bluefin tuna, Thunnus thynnus 
Material: One microslide of muscle tissue; 1 paraffin block 
Diagnosis: Parasitism by the myxosporidan, Kudoa sp. 
Submitter: B. L. Munday 
RTLA 2129. Rainbow trout, Salmo galrdneri 
Material: Seven microslides: thymus, gill, liver, and kidney tissue 
Habitat: Montana State Fish Hatchery 
Diagnosis: Malignant thymic lymphoma; gill granulomas 
Submitter: C. E. Smith 
RTLA 2130. Pine 
Material: 
Habitat: 
Diagnosis: 
Submitter: 
snake, Pituophis melanoleucus 
Two microscope slides 
Ft. Worth Zoological Park, Ft. Worth, Texas 
Invasive iridophoroma 
E. Jacobson 
RTLA 2131. Axolotl, Ambystoma sp. 
Material: A growth which had been attached to the liver and oviduct 
Diagnosis: Bacterial granuloma 
Submitter: R. Verhoeff-de Fremery 
RTLA 2132. American oyster, Crassostrea virginica 
Material: Four microslides 
Habitat: Pascagoula, Mississippi 
Diagnosis: Hematopoietic neoplasm; parasitism by Nemotopsis spores 
and Dermocystidium hypnospores 
Submitter: J. A. Couch 
RTLA 2133. Boa constrictor. Boa constrictor 
Material: Three pieces of tissue; 2 microslides (smears) 
Habitat: Pet; California 
Diagnosis: Possible gastrointestinal mucoadenocarcinoma based 
on clinical signs and exfoliative cytology 
Submitter: I. Gorman 
RTLA 2134. Siamese fighting fish, Betta splendens 
Material: One partly dissected fish; cyst-like growth removed 
from the visceral cavity 
Habitat: Aquarium; New Zealand 
Diagnosis: Multiple granulomas of possible mlcrosporidan etiology 
Submitter: S. G. Pullan 
