[size=3]DNA doppel-helix

[img]https://static1.squarespace.com/static/4ffb45f6e4b0620caf90d8b6/t/5784610f3f40581422eabe05/1461552810977/1000w/dna-double-helix-mthfr-gene-folate-folic-acid.jpg[/img] das wunder der DNA: https://yeshua.at/server/articles/view/42