A new article recommended by #PCIArchaeology now published in Peer Community Journal, #archaeology section: Parchment Glutamine Index (PQI): A novel method to estimate #glutamine deamidation levels in #parchmentcollagen obtained from low-quality MALDI-TOF data https://peercommunityjournal.org/articles/10.24072/pcjournal.230/ https://doi.org/10.24072/pcjournal.230