background: human cd34 is a transmembrane glycoprotein which is expressed in human hematopoietic stem cells (hscs) and the small- vessel endothelial cells of a variety of tissues. cd34 plays a critical role as a marker for diagnosis and classification of leukemia. anti cd34 antibodies are used for isolation and purification of hscs from bone marrow, peripheral blood and cord blood. objective: t...

Background: Sjögren’s syndrome is the second most common systemic autoimmune disease after rheumatoid arthritis, RA, with a prevalence of about 0.5% in the general population. It occurs primarily in perimenopausal women (at a ratio of women to men of 9: 1) Sjögren’s syndrome is characterized by lymphocytic infiltration to exocrine glands. The specific autoantibodies of this syndrome are against...

mammalians express several subclasses of the igg molecule. in human being there are four homologous igg subclasses, each of which is structurally unique and has different functions. quantification of igg subclasses is fundamental to clinical assessment and diagnosis of many diseases as such assessments depends on the availability of subclassspecific antibodies (abs), particularly monoclonal ant...

background: ferritin is an iron storage protein, which plays a key role in iron metabolism. measurement of ferritin level in serum is one of the most useful indicators of iron status and also a sensitive measurement of iron deficiency. monoclonal antibodies may be useful as a tool in various aspects of ferritin investigations. in this paper, the production of a murine monoclonal antibody (mab) ...

background: pan-igg specific monoclonal antibodies (mabs) are essential tools for assessment of humoral immunity, immune deficiency and gammopathy. in this study, four hybridoma clones producing mabs with different specificities for human igg isotypes were established. methods: splenocytes from balb/c mice immunized with fc fractions of human igg were fused with sp2/0 myeloma cells. hybridoma c...

background and aims: respiratory syncytial virus (rsv) infection is common in infants and young children. in infants younger than one year old it may cause bronchiolitis and pneumonia which requires hospitalization. accurate and rapid diagnosis of the disease will help proper treatment of the disease and prevents further complications. methods: specimen taken from respiratory tract of sick chil...

background: there are two subclasses of human iga (iga1 and iga2) that differ in antigenic properties and in chemical composition. the constant domains of α1 and α2 heavy chains have >95% sequence homology though major structural differences exist in the hinge region. quantitation of iga subclass levels depends on the availability of monoclonal antibodies (mabs) specific for conserved conformat...

background: monoclonal antibodies (mabs) are essential tools for many molecular im-munology investigations, epitope mapping and molecular modelling, clinical laboratory di-agnostic tests and immunotherapy. humoral immune response of immunized animals largely depends on the nature of antigen and the immunization technique. polysaccharides and heavily-glycosylated proteins are very elusive target...

the manipulation of redox potential in secretory pathway by thiol reducing agents can be a strategy to improve the production levels of disulfide-bonded proteins including recombinant antibodies. here we have studied the influence of cysteamine on viability and the production level of igg4 in sp2.0 cells. for this purpose, the recombinant sp2.0 cells producing an anti cd33 igg4, were subjected ...