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    Brown bears sparing for salmon — Stock Photo
    Brown bears sparing for salmon
    Close-up of a macrophage, illustration. — Stock Photo
    Close-up of a macrophage, illustration.
    Boxer performing boxing stance in fitness studio — Stock Photo
    Boxer performing boxing stance in fitness studio
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is blue. Mitochondria (cyan)) in the cell's cytoplasm produce energy for the cell. Lysosomes (red) contain enzymes for digesting foreign particles. M — Stock Photo
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is blue. Mitochondria (cyan)) in the cell's cytoplasm produce energy for the cell. Lysosomes (red) contain enzymes for digesting foreign particles. M
    Illustration of silhouette of obese man with highlighted spleen tumor. — Stock Photo
    Illustration of silhouette of obese man with highlighted spleen tumor.
    Illustration of female silhouette with painful spleen. — Stock Photo
    Illustration of female silhouette with painful spleen.
    Blue senior female silhouette showing spleen in body. — Stock Photo
    Blue senior female silhouette showing spleen in body.
    Monocyte and lymphocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Monocyte and lymphocyte white blood cells in blood smear, digital illustration.
    Karate player performing karate stance in fitness studio — Stock Photo
    Karate player performing karate stance in fitness studio
    Judoka doing push ups on gym mats — Stock Photo
    Judoka doing push ups on gym mats
    Front view mid section of judoka standing on gym mats, tying up the yellow belt of blue judogi. — Stock Photo
    Front view mid section of judoka standing on gym mats, tying up the yellow belt of blue judogi.
    Bacterial infection in the blood stream — Stock Photo
    Bacterial infection in the blood stream
    Lymphocytes attacking viruses — Stock Photo
    Lymphocytes attacking viruses
    Illustration of silhouette of obese man with visible spleen. — Stock Photo
    Illustration of silhouette of obese man with visible spleen.
    Illustration of female silhouette with highlighted spleen. — Stock Photo
    Illustration of female silhouette with highlighted spleen.
    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
    Mid section illustration of spleen in male body silhouette. — Stock Photo
    Mid section illustration of spleen in male body silhouette.
    Structure of dog lymphatic system with lymph vessels, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, digital illustration.
    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 focused teenage mixed race female judoka wearing blue judogi, warming up before a training in a gym, striking a pose, punching the air. — Stock Photo
    Front view close up of a focused teenage mixed race female judoka wearing blue judogi, warming up before a training in a gym, striking a pose, punching the air.
    Monocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Monocyte white blood cell in blood smear, digital illustration.
    Long poles and kung fu spears leaning on wall in martial arts studio. — Stock Photo
    Long poles and kung fu spears leaning on wall in martial arts studio.
    Karate fighter practicing with long pole in fitness studio. — Stock Photo
    Karate fighter practicing with long pole in fitness studio.
    Female boxer wearing red strap on wrist in fitness studio — Stock Photo
    Female boxer wearing red strap on wrist in fitness studio
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    Boxer wearing grappling gloves in fitness studio — Stock Photo
    Boxer wearing grappling gloves in fitness studio
    Nanobot attacking virus, conceptual digital illustration. — Stock Photo
    Nanobot attacking virus, conceptual digital illustration.
    Side view of a Caucasian female judo player sitting in the gym, taking a break in training, reaching for a plastic bottle from a mat. — Stock Photo
    Side view of a Caucasian female judo player sitting in the gym, taking a break in training, reaching for a plastic bottle from a mat.
    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
    Rear 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
    Rear view of two teenage Caucasian and mixed race female judokas wearing blue and white judogi, practicing judo during a sparring in a gym.
    Illustration of blue silhouette of obese woman with highlighted spleen on black background. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted spleen on black background.
    Karate fighter training martial arts in fitness studio. — Stock Photo
    Karate fighter training martial arts in fitness studio.
    Sandbags in rows at the water's edge to prevent erosion of the beach — Stock Photo
    Sandbags in rows at the water's edge to prevent erosion of the beach
    Illustration of transparent blue silhouette of male body with colored spleen. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored spleen.
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    Young adult karate player performing karate stance in fitness studio — Stock Photo
    Young adult karate player performing karate stance in fitness studio
    Illustration of transparent blue silhouette of male body with colored spleen. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored spleen.
    Asteroid defense missile launched at asteroid — Stock Photo
    Asteroid defense missile launched at asteroid
    Front view of a focused mixed race male judo coach wearing white judogi, kneeling on mats in the gym before judo training. — Stock Photo
    Front view of a focused mixed race male judo coach wearing white judogi, kneeling on mats in the gym before judo training.
    Side view close up of a middle aged Caucasian male instructor giving self defence training in a boxing gym demonstrating a hold on a young mixed race man, while another young man looks on — Stock Photo
    Side view close up of a middle aged Caucasian male instructor giving self defence training in a boxing gym demonstrating a hold on a young mixed race man, while another young man looks on
    3d illustration of cancer cells attacked and killed by lymphocytes. — Stock Photo
    3d illustration of cancer cells attacked and killed by lymphocytes.
    Boxer in helmet performing boxing stance in fitness studio — Stock Photo
    Boxer in helmet performing boxing stance in fitness studio
    Digital illustration of senior man anatomy showing spleen tumour. — Stock Photo
    Digital illustration of senior man anatomy showing spleen tumour.
    Portrait of boxer performing boxing stance in fitness studio — Stock Photo
    Portrait of boxer performing boxing stance in fitness studio
    Structure of dog lymphatic system with lymph vessels, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, digital illustration.
    Coloured scanning electron micrograph of macrophage white blood cell. — Stock Photo
    Coloured scanning electron micrograph of macrophage white blood cell.
    Spleen cancer in female body, computer illustration. — Stock Photo
    Spleen cancer in female body, computer illustration.
    Activated macrophage attacking bacteria — Stock Photo
    Activated macrophage attacking bacteria
    Male fighter training karate stance in fitness studio. — Stock Photo
    Male fighter training karate stance in fitness studio.
    Front view close up of a teenage mixed race female judoka wearing blue judogi, practicing with a judo jo stick during a training with a male coach in a gym. — Stock Photo
    Front view close up of a teenage mixed race female judoka wearing blue judogi, practicing with a judo jo stick during a training with a male coach in a gym.
    Portrait of a confident teenage Caucasian female judoka wearing blue judogi, standing in the gym with her arms crossed and looking straight into a camera. — Stock Photo
    Portrait of a confident teenage Caucasian female judoka wearing blue judogi, standing in the gym with her arms crossed and looking straight into a camera.
    Side view close up of a focused teenage mixed race female judo player wearing white judogi, taking a breath and resting during a sparring in a gym. — Stock Photo
    Side view close up of a focused teenage mixed race female judo player wearing white judogi, taking a breath and resting during a sparring in a gym.
    3d illustration of lymphocytes attacking cancer cells in human body. — Stock Photo
    3d illustration of lymphocytes attacking cancer cells in human body.
    Portrait of karate player performing karate stance in fitness studio — Stock Photo
    Portrait of karate player performing karate stance in fitness studio
    Part of the town wall — Stock Photo
    Part of the town wall
    Neutrophil and monocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Neutrophil and monocyte white blood cells in blood smear, digital illustration.
    Female boxer practicing with trainer at fitness studio — Stock Photo
    Female boxer practicing with trainer at fitness studio
    Front view close up 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
    Front view close up 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.
    Female boxer practicing with trainer at fitness studio — Stock Photo
    Female boxer practicing with trainer at fitness studio
    Human cell infected with Simian Immunodeficiency Virus from sooty mangabey, colored scanning electron micrograph. — Stock Photo
    Human cell infected with Simian Immunodeficiency Virus from sooty mangabey, colored scanning electron micrograph.