... are, as he suggests, highlighted by the putative relationship of HTLV-III/LAV with lentiviruses. The current scheme of retrovirus classification has an interesting history and needs revision, but ...

... some as leading to no practical good in classification. It seems to me, however, the only clear scheme for the proper working out of the ascertained or hypothetical relationships of animals; it is thought-exciting, its very ...

... between forms, the aim of the knowledge of relationships is the creation of a scheme of differentiation or classification. Any system of classifi- cation is at first ...

... he illustra- ted are classifiable in our simpler scheme. It is to be emphasized that the arbitrary classification we have used is not meant to imply a constant developmental relationship between the various types. While we think that ...

... of the individual organism as well as its relationship to other forms of life. The Swedish botanist-physician Linnaeus is the best- known of eighteenth-century taxonomists. His classification scheme which permitted orderly change with the constant increase ...

... main classes as noted by the mesio-distal relationship of the dental arches, and until a simpler classification of these mandibular deformities is found, it would seem reasonable to include them in the “ three-class scheme” of Angle’s classification, where their individual peculiarities may ...