มาลา, ไวรัส, ไวรัสโคโรน่า, โควิด -19, ชีววิทยา, ที่ระบาด, กักกัน, ยา, กล้องจุลทรรศน์, ไอ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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