กล้องจุลทรรศน์, จานเพาะเชื้อ, การทดลอง, ห้องปฏิบัติการ, วิทยาศาสตร์, ชีววิทยา, วิจัย, อุปกรณ์ห้องปฏิบัติการ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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