sentences:  A more modern isolation procedure is described by Pelletier and his co-workers, who used seeds of the "garden larkspur", "Consolida ambigua" (also referred to as "Delphinium ajacis") as their plant source.The complete molecular structure for MLA, correct in all but one detail, was first published by Kuzovkov and Platonova in 1959.This structure, supported in part by X-ray crystallography (considered usually to be a "definitive" analytical technique) of a chemical derivative of MLA performed by Maria Przybylska, was accepted as correct until the early 1980s.