Alternaria alternata Causing Flower Stem Blight of Lupinus havardii.

Lupinus havardii Wats., commonly known as Big Bend or Chisos bluebonnet, is a showy winter annual that can reach 1.0 to 1.

Alternaria alternata Flower Blight of Zinnia acerosa in Texas.

Zinnia acerosa (D.C.) Gray, is a Southwest native flowering plant frequently observed in the Trans-Pecos desert and desert grasslands of Arizona, Texas, and New Mexico.

Gaeumannomyces graminis var. graminis Isolated from Emerald Zoysiagrass in Texas.

Wilkinson and Kane (3) previously reported diseased zoysiagrass infected by Gaeumannomyces graminis (Sacc.) Arx & Olivier var. graminis in the spring in Illinois.

Novel method for isolating mammalian cells defective in fluid-phase endocytosis.

A new method for isolating mutants defective in fluid-phase endocytosis has been developed based on the observation that endocytosed horseradish peroxidase can be made lethal to cells. The method was used to isolate a mutant from Chinese hamster ovary cells, termed HRP-1, that was temperature-sensitive for viability and had a 70% reduction in the rate of horseradish peroxidase endocytosis at the restrictive temperature. At high temperature, HRP-1 cells were also defective in the secretory path and their Golgi complex disappeared at the resolution of fluorescence microscopy.

Impaired secretion and fluid-phase endocytosis in the End4 mutant of Chinese hamster ovary cells.

Mutant V.24.1 defines the End4 complementation group of temperature-sensitive Chinese hamster ovary cell mutants selected for resistance to protein toxins.

Impaired lysosomes in a temperature-sensitive mutant of Chinese hamster ovary cells.

We describe here the properties of a mutant of Chinese hamster ovary cells that expresses a conditional-lethal mutation affecting dense lysosomes. This mutant, termed V.24.

Three new complementation groups of temperature-sensitive Chinese hamster ovary cell mutants defective in the endocytic pathway.

We describe here the results of complementation studies with six mutant Chinese hamster ovary cells expressing temperature-sensitive lesions affecting the endocytic pathway. The mutants were crossed with representatives of the End1 and End2 complementation groups identified previously by Robbins et al. (J.

Predictive value of HLA-DR matching for nonreactivity in mixed lymphocyte culture (MLC) depends on matching for HLA-D.

In white members of our panel who have been repeatedly typed, close association between the HLA-D and DR specificities was observed. The typings were concordant with both haplotypes in 71% of the North American white panel. In American Indians concordance was observed in 47%, and in American black panel members in only 24%.

Antigens in human monocytes. III. Use of monocytes in typing for HLA-D related (DR) antigens.

Monocyte preparations were obtained from the peripheral blood by adherence to plastic dishes. The number of monocytes obtained was significantly greater than the number of B cells recovered from similar samples. Monocytes could be frozen and thawed with relatively little loss in cell numbers or viability.