IL6 and neuroblastoma: We examined the expression levels of most known pro-inflammatory cytokines (IL-1, IL-6, and TNF-α) and HERV genes linked to inflammatory disorders [26,27] in three different cell lines (human neuroblastoma SH-SY5Y cells, human laryngeal carcinoma HEp-2 cells, and human colorectal adenocarcinoma Caco-2 cells) under simulated μg and 1g conditions.