• Publications
  • Influence
Clip migration in stereotactic biopsy.
Nonspecific esterases in leukemic blasts. Characterization by isoelectric focusing in polyacrylamide gel.
TLDR
These studies provide further evidence for heterogeneity of nonspecific esterases, and for elaboration of isoenzymatic components as a reflection of cellular differentiation, using high-resolution technics of isoelectric focusing in polyacrylamide gel.
Cytochemical detection of homocysteine in pernicious anemia and in chronic erythremic myelosis.
  • L. Kass
  • Medicine
    American journal of clinical pathology
  • 1977
TLDR
The results of the study support the "methyltetrahydrofolate-trap" hypothesis in vitamin B12 deficiency and raise the possibility that similar intracellular accumulations of homocysteine may occur in chronic erythremic myelosis, perhaps as a result of a defect in the methyltransferase enzyme.
Clinical significance of immature reticulocyte fraction determined by automated reticulocyte counting.
TLDR
The results showed that the IRF has a weak but significantly positive correlation with ARC and with RPI, indicating that IRF is an additional useful parameter to evaluate the erythropoietic activity in anemia.
Reduced CD4 and HLA-DR expression in neonatal monocytes.
TLDR
The results raise the possibility that reduced expression of CD4 and HLA-DR receptors on cord blood monocytes may contribute to their impaired immune response.
Hairy-cell leukemia. A clinicopathologic and ultrastructural study.
TLDR
The clinical and morphologic findings of five cases of hairy-cell leukemia are presented, and the ultrastructure of hairy cells from one case is described, and it is described how the cells were different from lymphocytes, monocytes, and reticulum cells.
Nonspecific esterase activity in 'hairy cells'.
  • L. Kass
  • Biology
    Acta haematologica
  • 1977
TLDR
Nonspecific esterase activity using alpha-naphthyl butyrate as substrate was found to be present in hairy cells from patients with hairy cell leukemia, providing additional evidence of monocytic properties of hairy cells.
Niagara sky blue 6B--a new stain for granulocytic cells.
  • L. Kass
  • Medicine
    American journal of clinical pathology
  • 1 December 1980
TLDR
Using an acidified solution of Niagara sky blue 6B, granules in mature granulocytic cells from peripheral blood and bone marrow stained bright blue to blue-green and immature granulocytes like myelocytes and promyelocytes stained purple, revealing granular-appearing structures in leukemic myeloblasts and leukedmic monocytes.
Staining of granulocytic cells by Chlorazol black E.
  • L. Kass
  • Biology
    American journal of clinical pathology
  • 1 December 1981
TLDR
Using the trisazo dye Chlorazol black E, granules in neutrophilic granulocytes stained pale orange, gray and black, whereas in myelocytes and metamyelocytes, mixtures of orange and black granules were seen.
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