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observing color changes with different ph solutions
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color changes in liquids using ph indicators
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用手套和口罩的专业医生手里拿着医疗注射器,准备注射
女医师给患者注射 医生给病人注射
demonstrating ph changes with butterfly pea flower
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medical ampoules on drug manufacturing line
blood collection tubes, batch of unused specimen collection tubes, red caps and purple cap, blood tubes, blood donor
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observing color changes with different ph solutions
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paint pots for paint by numbers kit
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video of close up of test tubes on white background
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年轻的女医生在办公室戴上医疗手套 1
靠近醫生的手,戴上醫學手套
chocolatier pouring ganache filling into chocolate mold preparing candy with a pastry bag
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將樣本注入試管中
吸入空氣 進去科學小瓶子
nail technician shows the color palette of nail services in beauty salon.
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一名女性護士正在填充注射器,注射covid-19疫苗
準備顯微鏡滑板 (cu) 的方法
multi channel pipette with chemical 4k
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color change with lime juice and pea flower
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blood sample for coronavirus testing
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护士和女医生拿着covid-19疫苗的注射器的肖像
happy indian teacher explaining periodic table
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video of biracial female doctor with face mask holding test tube on blue background
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close up dentist hands holding highspeed dental drill
color change with different ph solutions
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一名女性護士正在填充一個注射器的疫苗瓶子,用來注射covid-19疫苗 2
科学家在实验室中比较实验的不同结果
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observing color changes in different solutions
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戴著醫療面具的女性醫生在白色背景和複製空間上填充注射器中的疫苗
animation of dna strand over biracial male scientist in laboratory
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laboratory worker preparing experiment at lab
orbital shaker for mixing, shaking, blending biological samples in plastic vials
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female hands put down boxes of insulin pens in the refrigerator for storage
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dental technician preparing for work
hand in gloves shaking medicine vial
stomatologist creating component of dental imprint. dentist hand mixing silicone
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塑膠測量圓柱體在實驗室中
placing drop of blood sample on one end of glass microscope slide - blood film
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video of close up of test tubes on white background
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portrait of lab technician holding tube of blood sample
close up of doctor hand adding blood sample drops to glass panel using blood dropper to test blood group in the laboratory
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scientist using multi channel pipette 4k
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stomatologist creating component of dental imprint. dentist hand mixing silicone
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test tubes with samples in a rack 4k
stomatolog squeezing silicone material for dental imprint. dental technician
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戴著醫療口罩和手套的女性醫生的肖像,拿著 covid-19 疫苗的注射器
science student in protective suit comparing samples
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doctor with blood test in tube in laboratory
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