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now being reported are relevant to research on streptococcal diseases. Dr Callan and others (Jan 13, p 106) describe delayed… Expand Endostreptosin (ESS) is an antigen derived from the cytoplasm and the plasma membrane of nephritogenic group A and to a lesser… Expand It is now generally accepted that acute post-streptococcal glomerulonephritis (PSGN) is the consequence of the formation of… Expand Our previous studies have shown that endostreptosin (ESS), a cytoplasmic protein of group A streptococci, in all probability is… Expand We report the isolation and purification of the nephritis strain- associated protein (NSAP) first described by Villareal et al… Expand Numerous investigators, most notably Rammelkamp (1) and Stollerman (2), have established that acute poststreptococcal… Expand Endostreptosin (ESS) is an immunologically well defined cytoplasmic antigen of group A and some group C streptococci. ESS is… Expand We determined antibody titers to Endostreptosin (ESS), a recently described protein antigen in the cytoplasm and the plasma… Expand An antigenic protein can be isolated from the water soluble supernatant of disrupted group A streptococci. This antigen… Expand