00503nas a2200217   4500000000100000008004100001260001600042653002400058653001100082653001200093653001500105653002000120653002800140100001200168700001400180700001400194245004600208300000900254490000800263022001400271       1974                            d  c1974 Aug 2610aAntigens, Bacterial10aHumans10aleprosy10aTuberculin10aTuberculin Test10aTuberculosis, Pulmonary1 aRea T H1 aSeltzer R1 aLevan N E00aLetter: Comparative tuberculin reactions.  a11650 v229  a0098-7484