The 'Lorenzan sulphates'. A new group of vertebrate mucopolysaccharides.

1. The mucopolysaccharide from the glands of Lorenzini of Squalus acanthias has been isolated and purified. 2. The material is a sulphated polysaccharide containing glucosamine, galactosamine, galactose and traces of an uronic acid. 3. This vertebrate polysaccharide is unusual in appearing to have both amino sugars present in the molecule. The amino sugars are N-acetylated. 4. This molecule is one of a group of related mucopolysaccharides which vary in composition with the animal species. The generic name ;lorenzan sulphates' is suggested to describe these substances.