There are multiple definitions:

1. hydroxytryptophan(English)

2. human toxicity potential(English)

   • LCA
   • Environment, Toxicology
   • https://doi.org…ROC.2006.883701

3. heated tobacco product(English)

   • a tobacco product that heats the tobacco at a lower temperature than conventional cigarettes. These products contain nicotine, which is a highly addictive chemical. The heat generates an aerosol or smoke to be inhaled from the tobacco, which contains nicotine and other chemicals
   • 5-mC, WHO, CpG, DNAm, RC, 5-hmC
   • Addiction and health, Epigenetics, Respiratory system, Oncology
   • https://apps.wh…ND-17.6-eng.pdf
   • https://doi.org…aap.2023.116637