| evidence of paratuberculosis in ohio's white-tailed deer, as determined by an enzyme-linked immunosorbent assay. | an enzyme-linked immunosorbent assay (elisa) was developed and used to detect antibodies to mycobacterium paratuberculosis in serum samples obtained in december of 1983 from 954 hunter-killed white-tailed deer (odocoileus virginianus) in 13 ohio counties. positive or negative status was determined by calculating a signal-to-noise ratio, a ratio between the optical density of the test serum and negative reference sera; a ratio of greater than or equal to 3.0 was considered positive. twenty-four s ... | 1986 | 3099612 |