[Evidence for existence of pores in intramembranous particles revealed by freeze fracturing].
In freeze-fracture replicas of membranes (plasma and intracellular) in a variety of animal cells, it is possible to detect the presence of intramembrane particles containing an electron-dense spot. The spot is interpreted as an accumulation of platinum into a cavity; the cavity could in turn correspond to a hydrophilic pore in the particle.
D000311:Adrenal Glands / Q000648:ultrastructure; D000818:Animals; D002462:Cell Membrane / Q000648:ultrastructure*; D005614:Freeze Fracturing; D002479:Inclusion Bodies / Q000648:ultrastructure; D007515:Islets of Langerhans / Q000648:ultrastructure; D008099:Liver / Q000648:ultrastructure; D001743:Urinary Bladder / Q000648:ultrastructure
Evidence pour l'existence de pores dans les particules intramembranaires révélées en cryodécapage