| Cooperia pectinata | Species that occurs in cattle, sheep, water buffalo, dromedary camels, and various wild ruminants; it is common in the southern U.S. (05 Mar 2000) |
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| Cooperia punctata | Species that occurs mainly in cattle, less commonly in sheep, water buffalo, and several wild ruminants; although worldwide in distribution, it is especially widespread in North America and common in Hawaii. Synonym: Cooperia fieldingi. (05 Mar 2000) |
| Cooperia spatulata | A species that occurs in cattle and sheep in the southern U.S., Kenya, Australia, and Malaysia. (05 Mar 2000) |
| Coopernail's sign | <clinical sign> In fracture of the pelvis, occurrence of ecchymosis of the perineum and scrotum, or labia. (05 Mar 2000) |
| Coopernail, George | <person> U.S. Surgeon, *1876. See: Coopernail's sign. (05 Mar 2000) |
| cooperos ligaments | Flexible bands of tissue that pass from the chest muscle between the lobes of the breasts, providing shape and support the breasts. (09 Oct 1997) |