[Effect of the admixture of tetracycline and nadifloxacin ointments on their stability and their antibacterial activity].

Impetigo contagiosa staphylogenes is commonly treated by administering a combination of nadifloxacin and tetracycline ointments. However, it is not clear whether nadifloxacin and tetracycline are stable after mixing. The purpose of this study was to evaluate the stability of these agents in combination.

Identification and characterization of beta-D-galactosyl-transferase in chick corneas.

Purpose: To purify beta-galactosyltransferase, which is involved in the biosynthesis of keratan sulfate, from 2-day-old chick corneas.

Methods: The activity was assayed using pyridylaminated GlcNAcbeta1-3Galbeta1-4Glc as acceptor substrate.

Results: The beta-galactosyltransferase did not bind to several ion exchange and affinity columns.