Children's rights and artificial procreation.

Techniques of artificial human reproduction should be assessed in the light of the interests of the children to be born from them. The problems of the child without a father and of the child with two mothers are discussed. The author concludes that the law should dissuade arrangements that are not in the best interests of the children.

Catalase activity in Campylobacter jejuni: comparison of a wild-type strain with an aerotolerant variant.

A comparison of Campylobacter jejuni VPI strain H840 (ATCC 29428), which can grow at O2 levels up to 15%, with variant strain MC711-01 (which can grow at O2 levels up to 21-26%) indicated that the specific activity of catalase in crude cell extracts was higher in the variant by a factor of 1.6 to 2.5, depending on cultural conditions.