because interleukin-1 beta ( il-1 beta ) and cachectin ( tumor necrosis factor ) are thought to mediate the body 's response to microbial invasion , we measured il-1 beta and tumor necrosis factor concentrations in paired cerebrospinal fluid ( csf ) samples ( on admission to the hospital , csf1 ; 18 to 30 hours later , csf2 ) from 106 infants and children with bacterial meningitis .
C0021270
infants
C0008059
children