Learn what the latest studies say about root canals—when they’re needed, how they work, and why quality care matters.

When the UNC-23 protein is altered, as in the mutant unc-23(e25), both the epithelial cell shape and its apical polarity (essentially, how it is arranged in the organism relative to the tip of the ...

Differentiating neurons in the embryonic spinal cord abscise their apical tips to detach from the ventricular surface. COURTESY OF RAMAN DAS In the early stages of vertebrate development, the ...