6 Dodge originally used "A" and "a" to designate the two sex types in Neurospora crassa. Lindegren later substituted the symbols "+" and "-" for these. Because of the desirability of using the symbol + for the normal allele of a gene and also to designate a positive experimental result, we prefer Dodge's original designations. 4 Neither conversion of pimelic acid to p-aminobenzoic acid by the n...

We explored, in rats, the conditions underlying the induction of liver tumors by ./V-hydroxy-./V-2-fluorenylacetamide (N-OH-FAA) in terms of the participation of an ultimate carcinogen in the form of the sulfate ester. Male rats were fed 2 dose levels, i.e., 0.0213%(0.89 mmole/kg) and 0.032%(1.34 mmoles/kg) of N-OH-FAA in the diet, with or without 0.89% (59 mmoles/kg) p-hydroxyacetanilide, and ...

A mild, efficient and regioselective method for para-amination of activated arenes has been developed through a combination of iron and copper catalysis. A diverse range of products were obtained from an operationally simple one-pot, two-step procedure involving bromination of the aryl substrate with the powerful Lewis acid iron(III) triflimide, followed by a copper(I)-catalysed N-arylation rea...