macromeres
/ˈmækroʊˌmɪrz/
noun
- Plural of macromere; large cells or blastomeres formed during early embryonic development.
- As the embryo develops, the macromeres divide to form the gut and other internal organs.
- Researchers studied how the macromeres interact with smaller cells during gastrulation.
- The macromeres in the sea urchin embryo are easily distinguished under the microscope.