passages.id: BioInfer.d40.s0__text
passages.type: Sentence
passages.text: Although both receptors are involved in M21 and H2981 cell adhesion to vitronectin, only a alpha v beta 3 can be detected in focal contacts, colocalizing with vinculin, talin, and the ends of actin filaments, while alpha v beta 5 shows a distinct, nonfocal contact, distribution on the cell surface.