Study of aspirated adipose tissue.

The author studied the components of aspirated adipose tissue. The several phases of this material were dissociated through decantation and centrifugation. The components were studied "in vitro" by fresh observation with loupes and microscopes. Histologic preparations were also used in this study. The results disclosed a heterogeneous material composed of free fat, blood components, fragments of adipose tissue of different shapes and sizes, collagen septa, vessels and nerves, clots, ruptured cells, and macromolecules of proteases, hemoglobin, and inflammatory proteins. These findings were present in the fat aspirated both with liposuction devices and with syringes.