From an original A2 allele (colored aleurone), a mutable allele, a2-m-4 1629, that changes from a2 to A2 is described. Mutability is expressed as a very distinct pattern limited to the last cell division.-The mutability of a2-m-4 1629 is autonomously controlled by an En at the a2 locus. This En, inactive on standard a testers for En, is partially active on a2-m-1, an a2 tester for En, and expre...

A new homozygous humanized transgenic mouse strain, HLA-A2.1(+/+)HLA-DP4(+/+) hCD4(+/+)mCD4(-/-)IAβ(-/-)β2m(-/-) (HLA-A2/DP4), was obtained by crossing the previously characterized HLA-A2(+/+)β2m(-/-) (A2) mouse and our previously created HLA-DP4(+/+) hCD4(+/+)mCD4(-/-)IAβ(-/-) (DP4) mouse. We confirmed that the transgenes (HLA-A2, HLA-DP4, hCD4) inherited from the parental A2 and DP4 mice are ...

The survival of cultured L1210 cells exposed to bleomycin A2 (BLM A2) was markedly decreased by coincubation with the local anesthetic lidocaine. The potentiation occurred with concentrations of lidocaine that were nontoxic and was dependent upon both the concentration of lidocaine and BLM A2. A 1000-fold decrease in survival was seen with a 1-h exposure to 8 mM lidocaine and 10 microM BLM A2 c...

A method for the preparation of biologically active [3H]- and [13C]bleomycin A2 is described. Demethyl Cu(II):bleomycin A2, isolated after pyrolysis of Cu(II):bleomycin A2, was methylated with either [3H]-or [13C]methyl iodide, which resulted in Cu(II):bleomycin A2 labeled in the dimethylsulfonium moiety. Copper was removed by treatment with dithizone in chloroform, and structures were verified...

BACKGROUND A thymidine to cytosine transition (designated A2 variant) in the promoter region of CYP17 has previously been associated with a familial history of prostate cancer in North American families. The purpose of the present study was to determine whether this correlation could be replicated in a European population. MATERIALS AND METHODS Case-control comparisons were performed by model...

Our recent research identified the protein annexin A2 to be regulated by ovarian cancer-peritoneal cell interactions. This study investigated the role of annexin A2 in ovarian cancer metastasis and its potential utility as a novel therapeutic target, using in vitro and in vivo ovarian cancer models. Annexin A2 expression was examined by qRT-PCR and western blotting in ovarian cancer cell lines ...

This study discussed four methods to project a diameter distribution from age A1 A2. Method 1 recovers parameters of the at A2 stand attributes that age. 2 uses stand-level model grow quadratic mean diameter, and then prediction. 3 grows by assuming tree-level survival growth functions. 4 first converts into list individual trees before growing these A2.
 In numerical example employing Wei...

Umbilical cord blood (UCB) is increasingly used as a source of hematopoietic progenitor cells to treat a variety of disorders. UCB transplant is associated with comparatively reduced incidence of graft-versus-host disease, robust graft versus leukemia effect, and relatively high incidence of opportunistic infections, three processes in which donor-derived T lymphocytes are known to be predomina...

Demethylation of Co-bleomycin A2 by heating yields three different complexes: form I and form II and "orange" Co-bleomycin-demethyl A2. These complexes can be separated by HPLC and show different 1H NMR spectra. Preparation of Co-bleomycin-demethyl A2 by chelation of bleomycin-demethyl A2 with cobalt yields a Co-bleomycin-demethyl A2, which is auto-oxidized into Co-bleomycin A1.

Francisella tularensis subsp. tularensis (type A) is subdivided into clades A1 and A2. Human tularemia infections caused by A1 and A2 differ with respect to clinical outcome; A1 infections are associated with a higher case fatality rate. In this study, we develop and evaluate TaqMan polymerase chain reaction (PCR) assays for identification of A1 and A2. Both assays were shown to be specific to ...