International Review of Cytology presents current advances and comprehensive reviews in cell biology – both plant and animal. Authored by some of the foremost scientists in the field, each volume provides up-to-date information and directions for future research. Articles in this volume address roles of PACAP-containing retinal ganglion cells in circadian timing; cell polarity in filamenous fungi; cellular and molecular mechanics of gliding locomotion in eukaryotes; current strategies in overcoming resistance of cancer cell and apoptosis; cell and molecular biology of the exosome: how to make of break an RNA; human hair keratin associated proteins (KAPs).