Tema
| Caballos | (1) |
| Catamarca | (1) |
| Caza | (1) |
| Células Piramidales | (1) |
| Células Sanguíneas | (1) |
| Ceremonial Behavior | (1) |
| Cervical Cord | (1) |
| Chemistry | (1) |
| Chemistry, Organic | (1) |
| Chemistry, Physical | (1) |
| China | (2) |
| Cirugía General | (2) |
| Cirujanos | (2) |
| Clima | (1) |
| Climate | (1) |
| Clinical Laboratory Techniques | (1) |
| Comoras | (1) |
| Complementary Therapies | (1) |
| Conducta Ceremonial | (1) |
| Constricción Patológica | (1) |
| Constriction, Pathologic | (1) |
| Control de Infecciones | (4) |
| Convulsiones | (1) |
| Coronavirus Infections | (7) |
| Creatividad | (1) |
| Creativity | (1) |
| Cuerpo Humano | (2) |
| Cultura Indígena | (6) |
