Biologist using a microscope to examine leaf litter for black-legged tick (Ixodes sp.) nymphs. Black-legged ticks are external parasites that feed on human blood. They spread Lyme disease,which causes a rash,fever and joint pain | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Bauer, Scott / US Department of Agriculture |
Bildgröße: | 2610 px × 3390 px |
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