Examlex
All of the following may result in an acquired immunodeficiency EXCEPT:
Stickleback
A small fish known for its distinctive spines on its back and its complex mating behaviors.
Fossil Evidence
Physical remnants of organisms from the past, preserved in geological formations, that provide information about the history of life on Earth.
Crystal Jellyfish
A species of jellyfish known for its transparent appearance and bioluminescent properties, often used in biological research.
Darwin's Theory
A scientific theory proposed by Charles Darwin that species evolve over time through a process of natural selection.
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