From the following article: The lipid composition of different membranes varies throughout the cell. The lipid compositional data (shown in graphs) are expressed as a percentage of the total phospholipid (PL) in mammals (blue) and yeast (light blue).
Synonyms: vitreous detachment, vitreous separation. Posterior vitreous detachment (PVD) is the separation of the posterior hyaloid face of the vitreous body from the neurosensory retina. The importance of PVD is that it is common but its symptoms and signs may mimic those of a retinal detachment. PVD is the most common cause of flashes and floaters.
Necrotic bone is present in chronic osteomyelitis, and symptoms may not occur until six weeks after the onset of infection.1 Further classification of osteomyelitis is based on the presumed mechanism of infection (e.g., hematogenous or direct inoculation of bacteria into bone from contiguous soft tissue infection or a chronic overlying open wound).2 The more complex Cierny-Mader classification system was developed to help guide surgical management, but is generally not used in primary care.3