Recall antigen

{
  "id": "MLC-T-CHM-010007",
  "term": "Recall antigen",
  "field": "Chemistry",
  "definition": "An antigen to which an individual has previously been exposed and developed an immune response, leading to the presence of memory cells. Upon re-exposure, these memory cells facilitate a rapid and amplified secondary immune response. Examples include tetanus toxoid or purified protein derivative (PPD) used in tuberculosis testing.",
  "subject": "Chemistry and Human Health",
  "see_also": [
    "secondary immune response",
    "hypersensitivity",
    "memory cell"
  ],
  "references": [
    "PAC, 2012, 84, 1113. 'IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)' on page 1239 (https://doi.org/10.1351/PAC-REC-11-06-03)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/recall-antigen/"
}