Exalpha Biologicals, Inc.

Product Highlight

FIX&PERM Cell Fixation and Permeabilization Kit

Flow cytometric analyses with monoclonal antibodies were so far mainly restricted to cell surface molecules. Intracellular structures such as cytoplasmic or nuclear enzymes, oncoproteins, cytokines, immunoglobulins etc. were largely excluded from such studies. Also excluded from flow cytometric studies were cytoplasmic localizations of well-established membrane molecules like CD3 and CD22, which, in their cytoplasmic form, are the most reliable lineage markers in undifferentiated leukemia. With the FIX&PERM® Kit flow cytometric analysis of intracellular antigens has become as easy as surface antigen studies. The only prerequisite is the availability of suitable antibody conjugates. Most of the available monoclonal antibody conjugates can be used with the FIX&PERM® Kit, some determinants are sensitive, however, to the fixation step involved. This and the optimal fixation time have to be tested for each reagent.


Welcome, Peter Rutten

We are pleased to announce that Peter Rutten has now started in his role as Operations Director here at Exalpha Biologicals Inc. Peter has a Master’s of Science degree in Industrial and Organizational Psychology and this has lead him down a very business orientated career path. Peter is looking forward to working with the team at Exalpha. Peters primary focus is the customer experience and he will be working with the Laboratory team, the Quality Control team and the Order Processing team to ensure this focus is achieved. We all wish Peter well in his new role.

Exalpha Biologicals, Inc.

Cycloscope B-All

  • Product Code: 7043
  • Size: 20 Tests
  • Availability: In Stock In Stock
  • Price (USD): $682

Cat #

7043		 Quantity:      

Data Sheet

Product Name

Cycloscope B-All

Product Type

Flow Cytometry Kits


Flow Cytometry


20 Tests

Price (USD)



Cycloscope B-ALL, is a kit used for the flow cytometric analysis of DNA cell contents in B-lineage acute lymphoblastic leukemia (B-ALL). This kit is mainly focused for DNA studies of leukemic blast cells from bone marrow samples of these patients. Introduction: Acute lymphoblastic leukemia is a disorder characterized by a clonal expansion of lymphoid progenitor cells arrested at different differentation steps whose progressive accumulation causes bone marrow involvement with more than 30% blast cells at diagnosis. According to the European Group for the Immunological Clasification of Leukemias, assignement of an ALL to the B-lineage is based on the expression on leukemic cells of at least two B lineage associated antigens: CD19, cytoplasmic CD79a (mb-1) or cytoplasmic CD22. DNA cell content studies by flow cytometry provide relevant information for the prognostic evaluation and follow-up of patients with acute lymphoblastic leukemia. Detection of hyperdiploid leukemic blast cells is an independent prognostic factor strongly associated with favourable clinical and biologic features (1-3); in addition it may be of great utility for the detection of minimal residual disease contributing to relapse prediction in these patients (4, 5). At present the clinical utility of cell cycle studies in B-lineage ALL still remains to be established (6).

Customer Storage

Product should be stored at 4-8°C. DO NOT FREEZE


1. Trueworthy R, Shuster J, Look AT, Crist WM, Borowitz M, Carroll A, Frankel L, Harris M, Wagner H, Haggard M, Mosijczuk A, Pullen J, Steuber P, Land V. Ploidy of lymphoblast is the stronger predictor of treatment outcome in B-progenitor cell acute lymphoblastic leukemia of childhood: a pediatric oncology group study. J Clin Oncol 10: 606-613; 1992.

2. Pui CH, Raimondi SC, Dodge R, Rivera GK, Fuchs LAH, Abromowitch M, Look AT, Furman WL, Crist WM, Williams D. Prognostic importance of structural chromosomal abnormalities in children with hyperdiploid (>50 chromosomes) acute lymphoblastic leukemia. Blood, 73: 1963-67; 1989.

3. Pui CH, Dodge RK, Look AT, George SL, Rivera GK, Abromowitch M, Ochs J, Evans WE, Crist WM, Simone JV. Risk of adverse events in children completing treatment for acute lymphoblastic leukemia: St. Jude total therapy studies VIII, IX and X. Clin. Oncol. 9: 1341; 1991.

4. Nowak R, Oelschl