Acne Pictures Media file 1: Locks follicle Media type: Illustration Media file 2: Comedones Media type: Photo Media document 3: Papules, pustules Media type: Photo Media file 4: Nodules Media type: Photo REFERENCES: Knutsen-Larson, S. A.L. Dawson, C.A. Dunnick, and R.P. Dellavalle. ‘Acne Vulgaris: Pathogenesis, Treatment, and Needs Assessment.’ Dermatol Clin 30 : 99-106. Titus, Stephen, and Joshua Hodge. ‘Diagnosis and Treatment of Acne.’ American Family Physician 86.8 Oct. 15, 2012: 734-740.This research group led by Dr. Chun-Xia Yang gathered a cohort of 191 patients and 198 handles in Yanting, a rural county of Sichuan Province in China. Each participant finished a questionnaire and offered 1 mL of blood, which gave the group enough information about environmental and genetic elements on esophageal cancer. Related StoriesCornell biomedical engineers develop 'super organic killer cells' to destroy tumor cells in lymph nodesMD Anderson study reveals why chemotherapy medications not effective for many pancreatic cancer patientsOvarian malignancy patients with a brief history of oral contraceptive make use of have better outcomesThis research reported that the ALDH2*1/*2 and ADH2*1 allele potentiate the carcinogenic effects of alcoholic beverages on the esophagus, and the two genotypes could modulate specific differences in alcohol-oxidizing capacity and drinking behavior.