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    Urine sample with test strip on white background. — Stock Photo
    Urine sample with test strip on white background.
    Girl drawing bar graph — Stock Photo
    Girl drawing bar graph
    Urine sample with test strip on white background. — Stock Photo
    Urine sample with test strip on white background.
    Girl standing in a field on a Christmas tree farm kissing a tree, United States — Stock Photo
    Girl standing in a field on a Christmas tree farm kissing a tree, United States
    Chinese doctor measuring boy height — Stock Photo
    Chinese doctor measuring boy height
    Teacher standing with student — Stock Photo
    Teacher standing with student
    Blood in human urine in sample pots, studio shot. — Stock Photo
    Blood in human urine in sample pots, studio shot.
    Dentist examining female patient with teeth shades at dental clinic — Stock Photo
    Dentist examining female patient with teeth shades at dental clinic
    Pancreas tissue. Transmission electron micrograph (TEM) of part of the exocrine pancreas. Seen here are zymogen granules and cell nuclei. In the image the endoplasmic reticulum that fills the cytoplasm is clearly visible. — Stock Photo
    Pancreas tissue. Transmission electron micrograph (TEM) of part of the exocrine pancreas. Seen here are zymogen granules and cell nuclei. In the image the endoplasmic reticulum that fills the cytoplasm is clearly visible.
    Jupiter and Earth to scale — Stock Photo
    Jupiter and Earth to scale
    Smiling worker helping woman shopping for wine glasses — Stock Photo
    Smiling worker helping woman shopping for wine glasses
    Three children choosing a Christmas tree on a Christmas tree farm, United States — Stock Photo
    Three children choosing a Christmas tree on a Christmas tree farm, United States
    Digital illustration comparing size of Earth with planet Uranus. — Stock Photo
    Digital illustration comparing size of Earth with planet Uranus.
    Goldsmith examining diamond through loupe in workshop — Stock Photo
    Goldsmith examining diamond through loupe in workshop
    Normal and fractured femur — Stock Photo
    Normal and fractured femur
    Dwarf planets and moons, digital illustration. — Stock Photo
    Dwarf planets and moons, digital illustration.
    Chinese doctor measuring girl height — Stock Photo
    Chinese doctor measuring girl height
    Woman checking details of a bottle of wine on her mobile phone — Stock Photo
    Woman checking details of a bottle of wine on her mobile phone
    Back view of faceless female in warm clothes standing alone on snowy glade against tall and wide green sequoia for comparison of size of human body and tree in forest of Sequoia National Park in USA — Stock Photo
    Back view of faceless female in warm clothes standing alone on snowy glade against tall and wide green sequoia for comparison of size of human body and tree in forest of Sequoia National Park in USA
    Medical illustration depicting the different stages of colon cancer — Stock Photo
    Medical illustration depicting the different stages of colon cancer
    Digital illustration of section of human kidney containing kidney stones. — Stock Photo
    Digital illustration of section of human kidney containing kidney stones.
    Girl looking at two gingerbread houses — Stock Photo
    Girl looking at two gingerbread houses
    Medical illustration detailing thoracic outlet syndrome — Stock Photo
    Medical illustration detailing thoracic outlet syndrome
    Relationship between Earth and Gliese-1214b — Stock Photo
    Relationship between Earth and Gliese-1214b
    Anatomy of swollen lymph nodes — Stock Photo
    Anatomy of swollen lymph nodes
    Illustration of healthy and degenerated substantia nigra of human brains with dopaminergic neurons. — Stock Photo
    Illustration of healthy and degenerated substantia nigra of human brains with dopaminergic neurons.
    Test tubes with urine samples for analysis on white background, studio shot. — Stock Photo
    Test tubes with urine samples for analysis on white background, studio shot.
    Smiling boy standing in a Christmas tree farm, United States — Stock Photo
    Smiling boy standing in a Christmas tree farm, United States
    Scientist hands holding urine sample in container and chart, studio shot. — Stock Photo
    Scientist hands holding urine sample in container and chart, studio shot.
    Goldsmith examining diamond through loupe in workshop — Stock Photo
    Goldsmith examining diamond through loupe in workshop
    Junior high schoolgirl making bar graph — Stock Photo
    Junior high schoolgirl making bar graph
    Dentist examining female patient with teeth shades at dental clinic — Stock Photo
    Dentist examining female patient with teeth shades at dental clinic
    People sitting in a coffee shop — Stock Photo
    People sitting in a coffee shop
    Boy choosing a Christmas tree on a Christmas tree farm, United States — Stock Photo
    Boy choosing a Christmas tree on a Christmas tree farm, United States
    Dentist examining female patient with teeth shades at dental clinic — Stock Photo
    Dentist examining female patient with teeth shades at dental clinic
    Woman checking time on sports smartwatch and smartphone. — Stock Photo
    Woman checking time on sports smartwatch and smartphone.
    Football players in sports uniform — Stock Photo
    Football players in sports uniform
    Girl standing in a field choosing a Christmas tree, United States — Stock Photo
    Girl standing in a field choosing a Christmas tree, United States
    Golden Bitcoins stacked next to British pound coins — Stock Photo
    Golden Bitcoins stacked next to British pound coins
    Size relationship between planets — Stock Photo
    Size relationship between planets
    Pancreas tissue. Transmission electron micrograph (TEM) of part of the exocrine pancreas. Seen here are zymogen granules and cell nuclei. In the image the endoplasmic reticulum that fills the cytoplasm is clearly visible. — Stock Photo
    Pancreas tissue. Transmission electron micrograph (TEM) of part of the exocrine pancreas. Seen here are zymogen granules and cell nuclei. In the image the endoplasmic reticulum that fills the cytoplasm is clearly visible.
    Dentist examining female patient with teeth shades at dental clinic — Stock Photo
    Dentist examining female patient with teeth shades at dental clinic
    Dead, dying and healthy red blood cells, conceptual digital illustration. — Stock Photo
    Dead, dying and healthy red blood cells, conceptual digital illustration.
    Comparison of different sized kidney stones in the human kidney — Stock Photo
    Comparison of different sized kidney stones in the human kidney
    Girl choosing a Christmas tree on a Christmas tree farm, United States — Stock Photo
    Girl choosing a Christmas tree on a Christmas tree farm, United States
    Female hand next to grizzly bear paw print on sand — Stock Photo
    Female hand next to grizzly bear paw print on sand
    Chinese fashion designer holding sketches in studio — Stock Photo
    Chinese fashion designer holding sketches in studio
    Good and bad student desk — Stock Photo
    Good and bad student desk
    Electric and manual toothbrushes against white background. — Stock Photo
    Electric and manual toothbrushes against white background.
    Baby siblings sitting back to back on floor. — Stock Photo
    Baby siblings sitting back to back on floor.
    Dentist examining female patient with teeth shades at dental clinic — Stock Photo
    Dentist examining female patient with teeth shades at dental clinic
    Green coffee beans and weight loss supplements. — Stock Photo
    Green coffee beans and weight loss supplements.
    Dentist examining female patient with teeth shades at dental clinic — Stock Photo
    Dentist examining female patient with teeth shades at dental clinic
    Pancreas tissue. Transmission electron micrograph (TEM) of part of the exocrine pancreas. Seen here are zymogen granules and cell nuclei. In the image the endoplasmic reticulum that fills the cytoplasm is clearly visible. — Stock Photo
    Pancreas tissue. Transmission electron micrograph (TEM) of part of the exocrine pancreas. Seen here are zymogen granules and cell nuclei. In the image the endoplasmic reticulum that fills the cytoplasm is clearly visible.
    Dwarf planets and moons, digital illustration. — Stock Photo
    Dwarf planets and moons, digital illustration.
    Girl choosing a Christmas tree on a Christmas tree farm, United States — Stock Photo
    Girl choosing a Christmas tree on a Christmas tree farm, United States
    Illustration of healthy and degenerated substantia nigra of human brains. — Stock Photo
    Illustration of healthy and degenerated substantia nigra of human brains.
    Dentist examining female patient with teeth shades at dental clinic — Stock Photo
    Dentist examining female patient with teeth shades at dental clinic
    Chinese doctor measuring girl height — Stock Photo
    Chinese doctor measuring girl height
    Schoolchildren in school uniform discussing test results at school yard — Stock Photo
    Schoolchildren in school uniform discussing test results at school yard