-5- 
the Registry of Tumors in Lower Animals, Proceedings of the Symposium 
on the Comparative Pathology of Zoo Animals, October 2-4, 1978, 
Washington, D. C. Smithsonian Institution Press (in press). 
SELECTED ACTIVITIES IN 1978 
1. Research activities: 
a. Studied, diagnosed, and described for the files approximately 
200 cases of diseases in cold-blooded vertebrates and inverte¬ 
brates . 
b. Collaborated with Karen L. Hoover (National Cancer Institute) 
and Sing C. Chang on the study of nuclear inclusions in gang¬ 
lion cells of minnows from the Ohio River. 
c. Collaborated (in various combinations) with Sing C. Chang, 
Sara V. Otto (Maryland Department of Natural Resources, 
Oxford, Md.), Paul P. Yevich (U.S. Environmental Protection 
Agency, Narragansett, R.I.), and Leslie A. Page (U.S. Depart¬ 
ment of Agriculture, Ames, Iowa), on the Incidence, distri¬ 
bution, cellular structure, fine structure, cell culture, 
immunological characterizations of 7 chlamydia, rickettsia, 
and mycoplasma parasites in 4 species of bivalve mollusks 
(Crassostrea virginica , Mya arenaria , Mytilus edulis , and 
Mercenaria mercenariay . 
d. Collaborated with Sing C. Chang and Peter H. Wolf (New South 
Wales State Fisheries, Sydney, Australia) on the fine struc¬ 
ture of papillary epitheliomas of the mantle in the Austra¬ 
lian rock oyster, Crassostrea commercialis . 
e. Collaborated with Sing C. Chang, Clyde J. Dawe (National 
Cancer Institute), and Louis E. DeLanney (Bar Harbor, Me.) 
on the fine structure of mastocytomas in the axolotl, Ambystoma 
mexicanum . 
f. Collaborated with Sing C. Chang and George H. Balazs (University 
of Hawaii at Manoa) on the fine structure of fibropapillomas in 
the green sea turtle, Chelonia mydas . 
g. Collaborated with Sing C. Chang, John Hurst (Maine Department 
of Marine Resources, West Boothbay Harbor, Me.), and Edward S. 
Gilfillan (Bowdoin College, Brunswick, Me.) on a study to 
determine if germinomas in the soft-shell clam, Mya arenaria , 
from an oil spill site were caused by hydrocarbons in the en¬ 
vironment and to determine if nuclear inclusions in the tumor 
cells are virus. 
