[Comparative scanning electron microscopical investigation of the bond between bone and different alloplastic implant materials (author's transl)].

The traditional alloplastic implant materials and their applications are represented and are investigated in a comparative scanning electron microscopical study between bone and alloplastic. Provable are clear in "bio-vitroceramic Ap 40" compounds to the bone in the scanning electron microscopical photo-contrary to titanium, tantalum and teflon.

[Changes in the shape of erythrocytes during use of extracorporeal circulation].

The behavior of red cell shape of circulating blood was investigated following operations using the heart-lung machine by different quantitative methods. It was discovered, that the schistocytes (light microscopy) and echinocytes (scanning electron microscopy) significantly increases. The changes in erythrocyte shape are comprehended as summary effect of erythrocyte damage by the extracorporeal system and discussed in relation to the loss of phospholipid components of the erythrocyte membrane.