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    Opioid and cannabinoid receptors in brain cell membrane, illustration. — Stock Photo
    Opioid and cannabinoid receptors in brain cell membrane, illustration.
    From below serious young doctor in protective mask and cap making surgery with instruments and crop nurse — Stock Photo
    From below serious young doctor in protective mask and cap making surgery with instruments and crop nurse
    Senior couple using smart phone in clinic waiting room — Stock Photo
    Senior couple using smart phone in clinic waiting room
    Portrait of male surgeon in operating theater. — Stock Photo
    Portrait of male surgeon in operating theater.
    Mosquito feeding on human blood, digital illustration. — Stock Photo
    Mosquito feeding on human blood, digital illustration.
    Side view of male medic in mask and uniform standing near window in clinic — Stock Photo
    Side view of male medic in mask and uniform standing near window in clinic
    Digital illustration of rod-shaped bacteria inside alveoli of lung causing Bacterial pneumonia. — Stock Photo
    Digital illustration of rod-shaped bacteria inside alveoli of lung causing Bacterial pneumonia.
    Scattered pills from jar on white surface — Stock Photo
    Scattered pills from jar on white surface
    Porphyromonas gingivalis oral bacterium, 360 degree panorama view computer illustration. P. gingivalis (formerly known as Bacteroides gingivalis) is part of the normal flora of the mouth, intestine and urogenital tract — Stock Photo
    Porphyromonas gingivalis oral bacterium, 360 degree panorama view computer illustration. P. gingivalis (formerly known as Bacteroides gingivalis) is part of the normal flora of the mouth, intestine and urogenital tract
    Combined video measuring system and ergonomic measuring microscope for devices in modern industrial facility. — Stock Photo
    Combined video measuring system and ergonomic measuring microscope for devices in modern industrial facility.
    Bartonella quintana bacteria, digital illustration. — Stock Photo
    Bartonella quintana bacteria, digital illustration.
    Colored large intestine in female body silhouette, digital illustration. — Stock Photo
    Colored large intestine in female body silhouette, digital illustration.
    From above of syringes in bowl with bloody water placed on sterile field near various surgical instruments in operating theater — Stock Photo
    From above of syringes in bowl with bloody water placed on sterile field near various surgical instruments in operating theater
    Crop unrecognizable veterinarian in latex gloves preparing assorted surgical tools on table against paws of canine patient in clinic — Stock Photo
    Crop unrecognizable veterinarian in latex gloves preparing assorted surgical tools on table against paws of canine patient in clinic
    Male anatomy and muscular system, computer illustration. — Stock Photo
    Male anatomy and muscular system, computer illustration.
    Illustration of senior man silhouette with visible lungs. — Stock Photo
    Illustration of senior man silhouette with visible lungs.
    Zika virus particles — Stock Photo
    Zika virus particles
    Doctors and nurse interacting while walking in hospital premises — Stock Photo
    Doctors and nurse interacting while walking in hospital premises
    Illustration of human skeleton with painful neck. — Stock Photo
    Illustration of human skeleton with painful neck.
    Pills pouring from dietary supplement capsules. — Stock Photo
    Pills pouring from dietary supplement capsules.
    Closeup of abstract background with round shaped cells of vaccine of different sizes illuminated by colorful light — Stock Photo
    Closeup of abstract background with round shaped cells of vaccine of different sizes illuminated by colorful light
    Female doctor examining hand of senior patient in clinic lobby — Stock Photo
    Female doctor examining hand of senior patient in clinic lobby
    Plasmodium ovale protozoan parasite and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasite and red blood cell in flow, computer illustration.
    Gene editing, conceptual digital illustration. — Stock Photo
    Gene editing, conceptual digital illustration.
    Elder man checking his arterial pressure with machine — Stock Photo
    Elder man checking his arterial pressure with machine
    Proximal phalanx bones in x-ray computer illustration of human foot. — Stock Photo
    Proximal phalanx bones in x-ray computer illustration of human foot.
    Female anatomical model with yellow colored and visible lungs, computer illustration. — Stock Photo
    Female anatomical model with yellow colored and visible lungs, computer illustration.
    Dentures on table against white background. — Stock Photo
    Dentures on table against white background.
    Human stomach cancer, computer illustration. — Stock Photo
    Human stomach cancer, computer illustration.
    Dried cannabis buds on black background — Stock Photo
    Dried cannabis buds on black background
    Back and chest musculature — Stock Photo
    Back and chest musculature
    Female silhouette with leg pain, digital illustration. — Stock Photo
    Female silhouette with leg pain, digital illustration.
    Digital illustration of senior man anatomy showing colon tumour. — Stock Photo
    Digital illustration of senior man anatomy showing colon tumour.
    Veterinarian examining dog in veterinary surgery — Stock Photo
    Veterinarian examining dog in veterinary surgery
    Sperm cell in a fallopian tube — Stock Photo
    Sperm cell in a fallopian tube
    Silhouette of female body with back pain, conceptual digital illustration. — Stock Photo
    Silhouette of female body with back pain, conceptual digital illustration.
    Woman with electrode pads on hand in clinic — Stock Photo
    Woman with electrode pads on hand in clinic
    Close up of a box of activated charcoal capsules with a glass of water. — Stock Photo
    Close up of a box of activated charcoal capsules with a glass of water.
    Condom barrier contraceptive is a latex sheath to be rolled over the erect penis before intercourse. — Stock Photo
    Condom barrier contraceptive is a latex sheath to be rolled over the erect penis before intercourse.
    3d rendered illustration of human heart. — Stock Photo
    3d rendered illustration of human heart.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Red and white and blue and white drug capsules on wooden table. — Stock Photo
    Red and white and blue and white drug capsules on wooden table.
    Digital illustration showing vaginitis caused by Candida auris fungus and close-up of yeast cells. — Stock Photo
    Digital illustration showing vaginitis caused by Candida auris fungus and close-up of yeast cells.
    Woman making facemasks for coronavirus pandemic — Stock Photo
    Woman making facemasks for coronavirus pandemic
    Hospital emergency. Medical staff pushing patient on a gurney. — Stock Photo
    Hospital emergency. Medical staff pushing patient on a gurney.
    Depressed nurse standing in hospital corridor — Stock Photo
    Depressed nurse standing in hospital corridor
    Fractured arm, coloured X-ray. — Stock Photo
    Fractured arm, coloured X-ray.
    Atherosclerosis harming blood vessel — Stock Photo
    Atherosclerosis harming blood vessel
    White tuberculin syringes on black background. — Stock Photo
    White tuberculin syringes on black background.
    Therapist performing acupuncture treatment on patient — Stock Photo
    Therapist performing acupuncture treatment on patient
    Human skeleton with detailed red Deltoid muscle, digital illustration. — Stock Photo
    Human skeleton with detailed red Deltoid muscle, digital illustration.
    Computer illustration of the basal ganglia, showing caudate nucleus (green), putamen (yellow), and lateral ventricles (blue). — Stock Photo
    Computer illustration of the basal ganglia, showing caudate nucleus (green), putamen (yellow), and lateral ventricles (blue).
    Brain hemisphere anatomy — Stock Photo
    Brain hemisphere anatomy
    Sonographer performing ultrasound on girl belly. — Stock Photo
    Sonographer performing ultrasound on girl belly.
    Group of cysts of Giardia intestinalis protozoans flagellated parasites in small intestine, digital illustration. — Stock Photo
    Group of cysts of Giardia intestinalis protozoans flagellated parasites in small intestine, digital illustration.
    Human hip musculature — Stock Photo
    Human hip musculature
    Illustration of heart in human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Side view of diverse male patients sleeping in bed in the ward at hospital — Stock Photo
    Side view of diverse male patients sleeping in bed in the ward at hospital
    Physiotherapist giving massage to woman in clinic — Stock Photo
    Physiotherapist giving massage to woman in clinic
    Female doctor taking blood pressure of senior woman. — Stock Photo
    Female doctor taking blood pressure of senior woman.