Cytological and Cytochemical Changes in Livers of White Mice following Intraperitoneal Injections of Dna Preparations from Breast Cancers of Agouti C3h Mice.

* The work reported in this note was done while the author was a fellow of the John Simon Guggenheim Memorial Foundation on leave of absence from the University of Brazil, Rio de Janeiro. This work was sponsored in part by the Army Algebras Research Project No. 2 at the University of Chicago. 1 All algebras considered here are supposed to be commutative, with unit, over the field of real numbers. A pre-norm of algebra on the algebra A is a real function r on A such that T(x) . 0, ir( + y) < T(x) + r(y), ir(xy) < wrx)r(y), xr(Xx) = Ixj T(x), T(I) = 1 or 0. Atopologicalalgebra is assumed to have its topology defined by its continuous pre-norms of algebra. 2 See N. Jacobson, Structure of Rings (Coll. Pub. Am. Math. Soc., No. 37 [New York, 1956]). 3We assume that if U belongs to e and U is isomorphic to V, then V belongs to e. 4See L. Nachbin, these PROCEEDINGS, 43, 935-37, 1957. The algebras are considered as algebras of operators on themselves.