[False aneurysm of the median meningeal artery: the importance of angiographic diagnosis. A case report]. / Falso aneurisma da artéria meníngea média. Importância do diagnóstico angiográfico. Relato de caso.

The purpose of this paper is to report a case of false aneurysm of the middle meningeal artery. The authors emphasize the value of "common" carotid angiography in diagnosis and treatment of this rare lesion.

Egg yolk as a source of antibodies for human parathyroid hormone (hPTH) radioimmunoassay.

Chickens were immunized with synthetic hPTH peptides 1-34 and 53-84. Serum from the best responder of each group was compared with IgG obtained from yolk of eggs layed by the same chicken, showing similar properties. A simple method for purification of IgG from yolk is described, allowing the obtaining of substantial amounts of anti-hPTH IgG without the need for bleeding the animals. We conclude that: 1) egg from chickens immunized with synthetic hPTH peptides are a convenient source of antibodies against these peptides; 2) this principle should apply to any other antigen to which chickens are good responders.