คุณภาพสูง, บทคัดย่อ, ไมโครไฟเบอร์, ผ้า, ภาพ, กล้องจุลทรรศน์, หลังการประมวลผล, ศิลปะ, ส้มบทคัดย่อ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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