Drupal-Bibcite0<style face="normal" font="default" size="100%">An hypothesis to explain why cell-mediated immunity alone can contain infections by certain intracellular parasites and how immune class regulation of the response against such parasites can be subverted.</style><style face="normal" font="default" size="100%">An hypothesis to explain why cell-mediated immunity alone can contain infections by certain intracellular parasites and how immune class regulation of the response against such parasites can be subverted.</style>