The phrase "novel peptide" refers to a new and unique type of small protein molecule. It means it has never been discovered or described before in any previous studies or research. Full definition
Chan's laboratory uses genomic analyses to identify neoantigens — novel peptides found only in tumors that arise from mutations accumulated by cancerous cells. (sciencemag.org)
Nerve cells exposed to the novel peptide had healthier mitochondria than unexposed cells. (sciencedaily.com)
Mice treated with the novel peptide did not experience these symptoms and appeared healthy. (sciencedaily.com)