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Fig. 1 | BMC Cancer

Fig. 1

From: Association of SNPs in nAChRs genes, areca nut chewing and smoking, and their interaction with lung cancer in Hainan, China: a case control study

Fig. 1

Simplified illustration of the human CHRNA5–CHRNA3–CHRNB4 gene cluster. (Each gene is not drawn to scale. The colored arrows indicate the direction of transcription. The locations of each gene are marked, and the genes highlighted in color are the ones we prioritized for further study after quality control.)

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