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RTLA 2203. Blue mussel, Mytilus edulis 
Material: 
Habitat: 
One microslide 
Inlet polluted by pulpmill effluent in British 
Columbia, Canada 
Diagnosis; 
Submitter: 
Diffuse massive eroding inflammatory reaction 
W. A. Heath 
RTLA 2204. Blue mussel, Mytilus edulis 
Material: 
Habitat: 
One microslide 
Inlet polluted by pulpmill effluent in British 
Columbia, Canada 
Diagnosis: 
Submitter: 
Foot granuloma; tubule inflammation (digestive diverticula) 
W. A. Heath 
RTLA 2205. Blue mussel, Mytilus edulis 
Material: 
Habitat: 
One microslide 
Inlet polluted by pulpmill effluent in British 
Columbia, Canada 
Diagnosis: 
Digestive diverticula degeneration with tubule destruction; 
Submitter: 
granuloma 
W. A. Heath 
RTLA 2206. Blue mussel, Mytilus edulis 
Material: 
Habitat: 
One microslide 
Inlet polluted by pulpmill effluent in British 
Columbia, Canada 
Diagnosis: 
Massive inflammation digestive diverticula; tubule 
destruction 
Submitter: 
W. A. Heath 
RTLA 2207. Blue mussel, Mytilus edulis 
Material: 
Habitat: 
One microslide 
Inlet polluted by pulpmill effluent in British 
Columbia, Canada 
Diagnosis: 
Submitter: 
Inflammation and degeneration of digestive diverticula 
W. A. Heath 
RTLA 2208. Cottonmouth, Agkistrodon piscivorus 
Material: 
Habitat: 
Diagnosis: 
Submitter: 
One microslide 
Zoological Society of London 
Hemangioendothelioma 
J. E. Cooper 
RTLA 2209. Monarch butterfly, Danaus plexippus 
Material: 
Habitat: 
Live animal with greatly enlarged abdomen 
Insect Zoo, National Museum of Natural History, 
Smithsonian Institution, Washington, D. C. 
Diagnosis: 
Submitter: 
Ascites; etiology unknown 
B. Daniels 
