PMC:2674207 / 2530-2693 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/2674207","sourcedb":"PMC","sourceid":"2674207","source_url":"http://www.ncbi.nlm.nih.gov/pmc/2674207","text":" then attack the invader. Sometimes, however, the immune system responds to a normally harmless material (for example, house-dust mites or grass pollen; scientists","tracks":[]}