| EM | of or relating to an embryo |
|---|---|
| EM | malignant neoplasm of the testis |
| EM | a tumor composed of immature undifferentiated cells |
| EM | form of rhabdomyosarcoma occurring mainly in infants and children |
| EM | form of rhabdomyosarcoma occurring mainly in infants and children |
| EM | in an early stage of development |
| EM | of an organism prior to birth or hatching |
| EM | of or relating to an embryo |
| EM | a cell of an embryo |
| EM | the inner embryonic membrane of higher vertebrates (especially when covering the head at birth) |
| EM | tissue in an embryo |
| EM | in an early stage of development |