Helicobacter pylori. a helix-shaped gram-negative microaerophilic bacteria has been classified as a human carcinogen (Group I carcinogen) by the International Agency for Research on Cancer (IARC) on the basis of numerous animal and epidemiological studies. Chronic Helicobacter pylori infection can cause lead to high levels of intracellular reactive oxygen species (ROS) and genomic ins... https://www.johnperformance.com/product-category/wooden-toys/