She insists the cause of her illness was her two- to three-year habit of vaping the e-cigarette Juul

H 2 O 2 content, protein content, total phenol content, lignin content, lactic acid content, and enzyme activity determination H 2 O 2 content, protein content, total phenol content, lignin content, lactic acid content and the activities of CAT, PAL, and POD were determined using an H 2 O 2 content assay kit (Suzhou Grace Biotechnology Co., Ltd., Suzhou, China), a protein assay kit (Suzhou Grace Biotechnology Co., Ltd., Suzhou, China), a total phenol assay kit (Suzhou Grace Biotechnology Co., Ltd., Suzhou, China), a lignin assay kit (Suzhou Grace Biotechnology Co., Ltd., Suzhou, China), a lactic acid assay kit (Suzhou Grace Biotechnology Co., Ltd., Suzhou, China) and the CAT, PAL and POD activity assay kit (Suzhou Greys Biological Technology Co., Ltd, Suzhou, China), respectively, H 2 O 2 content, protein content, total phenol content, lignin content, lactic acid content and enzyme activity were determined precisely according to the instructions in these kits

Atlanta: Centers for Disease Control and Prevention (2020)
Capri Menthol Cigarettes are produced by British American Tobacco 1 pack contains 20 cigarettes (Pack of 20)