Megakaryocytes from normal routine human bone marrow aspirates were analyzed by flow cytometry for size, fine cell structure and granularity, membrane expression of glycoprotein (GP) IIb/IIIa and ploidy. Marrow cells were initially enriched for megakaryocytes by a Percoll density gradient and megakaryocytes were labeled with a fluoresceinated monoclonal antibody directed to the GPIIb/IIIa compl...

Aspirate and bone marrow biopsy are diagnostic methods used in the study of hematological diseases allowing molecular, cytogenetic, and immunophenotype analyses, indispensable today for the classification of hematolymphoid malignancies. Its indications are ample and include various types of hematolymphoid malignancies, solid tumors, study of fever of unknown origin, and other infiltrative disea...

Aspirate and bone marrow biopsy are diagnostic methods used in the study of hematological diseases allowing molecular, cytogenetic, and immunophenotype analyses, indispensable today for the classification of hematolymphoid malignancies. Its indications are ample and include various types of hematolymphoid malignancies, solid tumors, study of fever of unknown origin, and other infiltrative disea...

Flow cytometric immunophenotyping (FCI) is recommended in the evaluation of cerebrospinal fluid (CSF) specimens for hematologic neoplasms. This study reviewed FCI of CSF specimens collected for primary diagnosis (n = 77) and follow-up for known malignancy (n = 153). FCI was positive in 11 (4.8%) of 230 specimens: acute myeloid leukemia, 6; precursor B-acute lymphoblastic leukemia, 2; B-cell lym...

High-throughput screening of cells expressing active catalytic antibody clones by flow cytometry is described. A fluorogenic retro-aldol retro-Michael substrate was designed and synthesized with incorporation of a chloromethyl moiety for intracellular retention. Hybridoma or transfected mammalian cells expressing catalytic antibody molecules could be rapidly isolated.

Flow cytometry techniques together with morphologic studies were used to perform multiparametric analyses with the aim of studying the dynamic aspects of cell cultures derived from CE44 teratocarcinoma embryoid bodies. The intrinsic cell parameters studied by flow cytometry were size (FALS) and cytoplasmic complexity (ISS). Our results show that CE44 teratocarcinoma yields monolayers whose cell...

An equilibrium-type competitive-binding fluorescence immunoassay with high sensitivity and excellent precision is described that obviates separation of free from bound label. In the assay relatively large (10 microns diameter) antibody-coated non-fluorescent particles and very small (0.10 micron diameter) antigen-coated fluorescent latex particles are used. Soluble nonlabeled antigen competes w...

BACKGROUND Recently, the UF-100 (Sysmex Corporation) flow cytometer was developed to automate urinalysis. We evaluated the use of flow cytometry in the analysis of cerebrospinal fluid (CSF). METHODS UF-100 data were correlated with microscopy and biochemical data for 256 CSF samples. Microbiological analysis was performed in 144 suspected cases of meningitis. RESULTS Good agreement was obta...

Flow cytometry is a powerful, high-throughput library screening tool in numerous applications including the isolation of bioactive molecules from synthetic combinatorial libraries, the identification of virulence genes in microorganisms, and the study and engineering of protein functions. Using flow cytometry, large libraries of protein mutants expressed in microorganisms can be screened quanti...