GROSS SIGNS OF TUMORS IN GREAT LAKES FISH:
A MANUAL FOR FIELD BIOLOGISTS

Figure 2. Oral papillomas on the lips of brown bullhead. (A) a large papilloma on the lower lip and in the left corner of the lower jaw. (B) Large papilloma on the right side and a smaller one on the left side of the lower jaw. Note the clubbed barbels. (Courtesy of M. Mueller).

  Figure 2a

  Figure 2b

  Figure 2c

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