... parasite, adhesion to host cells is essential for the development of infection. During attachment, the parasite changes its tear ovoid shape to a flat ameboid form, expanding the contact surface and migrating through tissues. Here, we have identified a novel structure formed at the posterior pole...

... chromosome segregation. Only when all the chromosomes are attached by kinetochore microtubules from two opposite spindle poles and proper tension is placed on the paired kinetochores does anaphase take place, allowing the physical splitting of sister chromatids. Recent studies have provided novel insights...

...Masahiro Hara; Mina Yaar; Aimin Tang; Mark S. Eller; Wende Reenstra; Barbara A. Gilchrest ABSTRACT Integrins are a family of proteins known to mediate attach-ment of cells to extracellular matrix materials. The sub-stratum specificity and cation dependence of specific integrin heterodimers have...

...Massimo Malcovati; Maria Luisa Tenchini ABSTRACT Attachment, spreading and clustering of second-passage human keratinocytes in serum-free medium have been evaluated within 24 h after plating, as a function of the density of the inoculum and of time, in two different strains. The results show...