We conclude that the absence of consistent genetic differences between R. rattus and the putative hybrids indicates that the latter are simply morphological variants of the former, which is consistent with the observation that R. rattus is a notably polymorphic species [13].
Fixation on Hsp90 proceeds from the original Rutherford and Lindquist paper, but it must be emphasized that the importance of that paper derived largely from the observation of morphological variants in the absence of chaperone – contrast this with loss of function in the Teschke coat-protein mutants.
If, however, these are morphological variants of the same species, the same gene sequences (with minor allelic variation) should be observed.
Being a mucoid strain, TBCF10839 had already acquired the morphological signature of chronic airway colonizers, and hence we expected that single hits in the genome should generate more informative morphological variants than the same approach in strains PAO1 or PA14.
Other resources are imported into the Directory through specialized scripts, such as BioLexicon [ 71], which is used to expand terms in their synonym and morphological variants, and the body of ontologies, expressed in OWL, which constitute the DC-THERA Ontology.
In Chinese, the default classifier ge (or its morphological variant yi-ge) may have the function of a nominalizer (see Myers 2000 for ge's special status even when it occurs as a counting unit).
EBV positivity occurs in up to 70% of cases depending on the precise morphological variant, whereas primary CNS DLBCL is associated with EBV in over 90% of cases; interestingly, EBV positivity is seen in nearly all cases of HD associated with HIV.
The SHA form has clear genetic differences from the TYP and LON forms and it might represent a morphological variant of S. cichorioides expanded to the supralittoral environment.
According to this model, nevus cells are considered a morphological variant of melanocytes that have assumed a morphology that is more epithelioid and less dendritic.
To the best of our knowledge, this unusual morphological variant of perineurioma has not been reported.
