Skip to main content
Figure 1 | EvoDevo

Figure 1

From: Cortical cytasters: a highly conserved developmental trait of Bilateria with similarities to Ctenophora

Figure 1

Schematic representation of a section of the bilaterian egg. There are two cytoskeletal domains of microtubules in the first interphase of the bilaterian zygote: one formed by cytasters (asters, painted green) placed in the cortex or surface of the egg (Ectoplasmic domain), and a second domain organized by the monoaster (black aster) of the sperm-derived centrosome, placed in the inner cytoplasm (Endoplasmic domain). Discrete foci schematically represent the centrioles (these can only be observed in actual embryos by means of special techniques, such as the injection of labeled tubulin or application of microtubule-polymerizing agents like taxol).

Back to article page