The human delta- and beta-globin genes, contained in a recombinant bacteriophage (lambda H beta G1), were introduced into mouse fibroblasts by cotransformation with a plasmid (chi 1) containing the herpes simplex thymidine kinase gene using the calcium phosphate precipitation technique. A molar ratio of lambda H eta G1 to chi 1 DNA of 3:1 was used. Four of the eleven stable transformants obtain...

In the transformation semigroup (X, S) we introduce the height of a closed nonempty invariant subset of X, define the transformed dimension of nonempty subset S of X and obtain some results and relations.

in the transformation semigroup (x, s) we introduce the height of a closed nonempty invariant subset of x, define the transformed dimension of nonempty subset s of x and obtain some results and relations.