ดีเอ็นเอ, 3d, ชีววิทยา, ทางพันธุกรรม, วิจัย, เทคโนโลยีชีวภาพ, ยีน, เคมี, ยา, ส่วนที่เป็นเกลียว, เกลียว
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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