Uruguay
| Country: | Uruguay |
| Type: | Postage stamps |
| Series: | Uruguayan medical researchers |
| Nominal: | 6 $ |
| Year: | 1998 |
| Perforation: | comb 12½ x 12¾ |
| Mintage: | 35,000 |
Uruguayan medical researchers
 Roberto Caldeyro Barcia |  Jose Verocay |  Jose Duomarco |