primary constriction


Also found in: Medical.

primary constriction

[′prī‚mer·ē kən′strik·shən]
(cell and molecular biology)
References in periodicals archive ?
It is required for proper chromosome segregation in mitosis and meiosis and readily recognizable as the primary constriction of mitotic chromosomes.
Proximal to the primary constriction site, the umbilical cord was moderately edematous and disclosed additional less pronounced foci of attenuation.
1,2,11,12] In the third pregnancy of this series, the primary constriction site lacked the profound spiraling observed in the previous 2 gestations.