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    Illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Illustration of cancer cell being attacked by white blood cells.
    Hands of female boxer practicing with trainer at fitness studio — Stock Photo
    Hands of female boxer practicing with trainer at fitness studio
    3d illustration of lymphocytes attacking cancer cells in human body. — Stock Photo
    3d illustration of lymphocytes attacking cancer cells in human body.
    Structure of dog lymphatic system with lymph vessels, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, digital illustration.
    Tired female boxer leaning on boxing ring in fitness studio — Stock Photo
    Tired female boxer leaning on boxing ring in fitness studio
    Antibody, or immunoglobulin molecules — Stock Photo
    Antibody, or immunoglobulin molecules
    Lymphocytes attacking a cancer cell — Stock Photo
    Lymphocytes attacking a cancer cell
    Illustration of overweight woman with visible spleen on black background. — Stock Photo
    Illustration of overweight woman with visible spleen on black background.
    Kung fu fighter practicing with long pole in fitness studio. — Stock Photo
    Kung fu fighter practicing with long pole in fitness studio.
    Side view of a mixed race male judo coach and teenage mixed race male judoka, wearing blue and white judogi, practicing judo during a training in a gym. — Stock Photo
    Side view of a mixed race male judo coach and teenage mixed race male judoka, wearing blue and white judogi, practicing judo during a training in a gym.
    Mid section of karate player performing karate stance in fitness studio — Stock Photo
    Mid section of karate player performing karate stance in fitness studio
    Nanobots attacking virus, conceptual digital illustration. — Stock Photo
    Nanobots attacking virus, conceptual digital illustration.
    Man in defensive pose, computer illustration — Stock Photo
    Man in defensive pose, computer illustration
    Illustration of silhouette of obese man with visible spleen. — Stock Photo
    Illustration of silhouette of obese man with visible spleen.
    Silhouettes of military crew walking — Stock Photo
    Silhouettes of military crew walking
    Side view of two teenage Caucasian and mixed race female judokas wearing blue and white judogi, practicing judo during a sparring in a gym. — Stock Photo
    Side view of two teenage Caucasian and mixed race female judokas wearing blue and white judogi, practicing judo during a sparring in a gym.
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    Monocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Monocyte white blood cell in blood smear, digital illustration.
    Brown bears sparing for salmon — Stock Photo
    Brown bears sparing for salmon
    Lymphocyte, monocyte and neutrophil white blood cells in blood smear, digital illustration. — Stock Photo
    Lymphocyte, monocyte and neutrophil white blood cells in blood smear, digital illustration.
    Side view of a focused teenage Caucasian female judoka wearing a blue judoig, facing a wall picking up a judo jo stick during a judo training. — Stock Photo
    Side view of a focused teenage Caucasian female judoka wearing a blue judoig, facing a wall picking up a judo jo stick during a judo training.
    Neutrophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cell and red blood cells, digital illustration.
    Female boxer practicing with trainer at fitness studio — Stock Photo
    Female boxer practicing with trainer at fitness studio
    Portrait of boxer performing boxing stance in fitness studio — Stock Photo
    Portrait of boxer performing boxing stance in fitness studio
    Boxer wearing boxing gloves in locker room at fitness studio — Stock Photo
    Boxer wearing boxing gloves in locker room at fitness studio
    Blue senior female silhouette showing spleen in body. — Stock Photo
    Blue senior female silhouette showing spleen in body.
    Transparent female body silhouette with yellow colored spleen, digital illustration. — Stock Photo
    Transparent female body silhouette with yellow colored spleen, digital illustration.
    Young adult karate player performing karate stance in fitness studio — Stock Photo
    Young adult karate player performing karate stance in fitness studio
    Structure of dog lymphatic system with lymph vessels, cropped, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, cropped, digital illustration.
    Antibody, or immunoglobulin molecules — Stock Photo
    Antibody, or immunoglobulin molecules
    Front view high angle of a teenage mixed race female judoka, sitting on gym mats, stretching her leg before judo training. — Stock Photo
    Front view high angle of a teenage mixed race female judoka, sitting on gym mats, stretching her leg before judo training.
    3d illustration of cancer cell attacked and killed by lymphocytes. — Stock Photo
    3d illustration of cancer cell attacked and killed by lymphocytes.
    Mid section of karate player performing karate stance in fitness studio — Stock Photo
    Mid section of karate player performing karate stance in fitness studio
    The old city wall in Cartagena, Bolivar, Colombia — Stock Photo
    The old city wall in Cartagena, Bolivar, Colombia
    Front view of a mixed race male judo coach and teenage mixed race female judoka, wearing blue and white judogi, practicing judo during a training in a gym. — Stock Photo
    Front view of a mixed race male judo coach and teenage mixed race female judoka, wearing blue and white judogi, practicing judo during a training in a gym.
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    Boxer performing boxing stance in fitness studio — Stock Photo
    Boxer performing boxing stance in fitness studio
    Illustration of spleen in male body silhouette. — Stock Photo
    Illustration of spleen in male body silhouette.
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    Illustration of female silhouette with painful spleen. — Stock Photo
    Illustration of female silhouette with painful spleen.
    Illustration of figure of obese man with visible spleen. — Stock Photo
    Illustration of figure of obese man with visible spleen.
    Front view close up of a teenage Caucasian female judo player wearing blue judogi, kneeling on mats in the gym before judo training. — Stock Photo
    Front view close up of a teenage Caucasian female judo player wearing blue judogi, kneeling on mats in the gym before judo training.
    Side view of two teenage Caucasian and mixed race female judokas wearing blue and white judogi, practicing judo during a sparring in a gym. — Stock Photo
    Side view of two teenage Caucasian and mixed race female judokas wearing blue and white judogi, practicing judo during a sparring in a gym.
    Transparent female body silhouette with yellow colored spleen, digital illustration. — Stock Photo
    Transparent female body silhouette with yellow colored spleen, digital illustration.
    Lymphocyte white blood cells in human lymphatic system, digital illustration. — Stock Photo
    Lymphocyte white blood cells in human lymphatic system, digital illustration.
    Hand of karate player performing karate stance in fitness studio — Stock Photo
    Hand of karate player performing karate stance in fitness studio
    Side view of a mixed race male judo coach wearing white judogi, warming up before a training in a gym, striking a pose, punching the air. — Stock Photo
    Side view of a mixed race male judo coach wearing white judogi, warming up before a training in a gym, striking a pose, punching the air.
    Young adult karate player performing karate stance in fitness studio — Stock Photo
    Young adult karate player performing karate stance in fitness studio
    Young adult karate player performing karate stance in fitness studio — Stock Photo
    Young adult karate player performing karate stance in fitness studio
    Karate player in prayer pose in fitness studio — Stock Photo
    Karate player in prayer pose in fitness studio
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Antibodies attacking coronavirus particle, illustration. — Stock Photo
    Antibodies attacking coronavirus particle, illustration.
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is red. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (black) contain enzymes for digesting foreign particles. — Stock Photo
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is red. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (black) contain enzymes for digesting foreign particles.
    Portrait of confident female boxer leaning on boxing ring in fitness studio — Stock Photo
    Portrait of confident female boxer leaning on boxing ring in fitness studio
    Transparent male silhouette with colored spleen, computer illustration. — Stock Photo
    Transparent male silhouette with colored spleen, computer illustration.
    Illustration of female silhouette with highlighted spleen. — Stock Photo
    Illustration of female silhouette with highlighted spleen.
    Neutrophil and monocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Neutrophil and monocyte white blood cells in blood smear, digital illustration.
    3d illustration of lymphocytes attacking cancer cells in human body. — Stock Photo
    3d illustration of lymphocytes attacking cancer cells in human body.
    Transparent female body silhouette with yellow colored spleen, digital illustration. — Stock Photo
    Transparent female body silhouette with yellow colored spleen, digital illustration.