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Chlamydia pneumoniae has been associated with atherosclerosis and several other chronic diseases, but reports from different laboratories are highly variable and "gold standards" are lacking, which(More)
Host protection against pneumococcal disease i primarily mediated by phagocytosis. We developed and standardized an opsonophagocytic assay using HL-60 cells (human promyelocytic leukemia cells).(More)
Pneumococcal surface protein A (PspA), pneumococcal surface adhesin A (PsaA), and pneumolysin (Ply) are common to virtually all Streptococcus pneumoniae isolates. They are immunogenic and protective(More)
A new standard meningococcal reference serum designated CDC1992 was prepared to replace meningococcal reference sera ECG and PB-2, which are not available in sufficient quantities for continued use(More)