แบคทีเรีย, เชื้อโรค, จุลินทรีย์, ทางการแพทย์, จิ๋ว, วิทยาศาสตร์, ชีววิทยา, การติดเชื้อ, blobs, สิ่งมีชีวิต, บทคัดย่อ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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