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Single Human sperm swimming, big close up, Interference contrast
Single Human sperm swimming, big close up, Interference contrast
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Single Human sperm swimming, best, Interference contrast
Single Human sperm swimming, best, Interference contrast
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Two Human sperm swimming, Interference contrast
Two Human sperm swimming, Interference contrast
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Single Human sperm swimming against the flow of semenal plasma, Interference contrast
Single Human sperm swimming against the flow of semenal plasma, Interference contrast
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Human sperm with two tails swimming ineffectually
Human sperm with two tails swimming ineffectually
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Single Human sperm swimming against the flow of semenal plasma, Interference contrast
Single Human sperm swimming against the flow of semenal plasma, Interference contrast
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Single Human sperm swimming, big close up, Interference contrast
Single Human sperm swimming, big close up, Interference contrast
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Single Human sperm swimming, big close up, Interference contrast
Single Human sperm swimming, big close up, Interference contrast
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Phepls recovers his motivation and he's ready to t
New York, 9 Feb (EFE).- US swimmer Michael Phelps, 16 Olympic medals winner, is ready for the London Olympic Games 2012. Phelps said during a advertising campaign act that his has recovered his motivation and his happy and excited about...
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Human sperm, general shot, includes two-tailed sperm
Human sperm, general shot, includes two-tailed sperm
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Human sperm, medium lots sperm swimming around, pan across. Two tailed sperm on left of frame at end of shot
Human sperm, medium lots sperm swimming around, pan across. Two tailed sperm on left of frame at end of shot
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Human sperm, two sperm swimming rather ineffectually
Human sperm, two sperm swimming rather ineffectually
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Single Human sperm swimming, big close up, Interference contrast
Single Human sperm swimming, big close up, Interference contrast
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Single Human sperm swimming, big close up, Interference contrast
Single Human sperm swimming, big close up, Interference contrast
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Indoor swimming pool. Swim training, water fun. Kids and adults.
Indoor swimming pool. Swim training, water fun. Kids and adults.
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MS Large pod of spinner dolphin / Guanacaste, Costa Rica
MS Large pod of spinner dolphin / Guanacaste, Costa Rica