The US Department of Agriculture orders Santa Cruz Biotechnology to pay a $3.5 million fine and to cease selling research antibodies.
June 15, 1987|
Every cultured person today has heard of DNA, RNA and protein synthesis. But nucleic acids were not so well-known in 1927, when Albert Dalcq asked me to study the localization of "thymonucleic acid" in ovarian eggs (ovocytes). Biochemistry textbooks merely said that there are two kinds of nucleic acids, "animal" and "vegetal." Thymonucleic acid, a typical animal nucleic acid, had a queer sugar residue, which makes it a DNA. Plant nucleic acids, like zymonucleic acid from yeast, contained a pento