Synthetic polymer derivatives as substrata for neuronal adhesion and growth.

The adhesion and viability of dissociated neurons of rat cerebral hemispheres onto methacrylate and methacrylamide hydrogels, either unmodified or containing collagen, basement membrane proteins, and glucosamine, were measured in vitro. The degree of cell adhesion was affected by properties of the polymers such as hydrophilicity, hydrophobicity, presence of reactive chemical groups, and incorporation of biological molecules. Adhesion was promoted by attachment of glucosamine to the polymer backbone.

Leptospirosis in small mammals of Iran: II: isolation of Leptospira grippotyphosa from Mus msuculus.

The serotype of Leptospira grippotyphosa, which is most frequently encountered among sheep, cattle and man in Iran, was isolated from the kidney of a house mouse, Mus musculus, by direct culture and animal inoculation. This is the first time that a rodent reservoir of L. grippotyphosa in Iran has been investigated and reported.

Leptospirosis in small mammals of Iran: I. Serologic tests and isolation of Leptospira hebdomadis from Apodemus sylvaticus.

Leptospires of the hebdomadis sero-group and related to sejroe serotype, were isolated from the kidney of a vole (Apodemus sylvaticus) by direct culture as well as by animal inoculation. Sera of the vole from which leptospires were isolated, and serologic specimens from 1372 other small mammals, were negative for leptospiral agglutinins.

Failure of antrycide in treatment of leptospirosis in experimentally infected hamsters.

The chemotherapeutic efficacy of quinapyramine (antrycide) could not be demonstrated in hamsters experimentally infected with a virulent strain of serotype bataviae.