After a meal of raw oysters, a woman begins to feel numbness and tingling in her hands and feet. By the time she gets to the hospital, she can no longer move and is having difficulty breathing. The lab finds a protist with two flagella. The organism is a(n)

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The symptoms described are consistent with paralytic shellfish poisoning, which is caused by toxins produced by certain dinoflagellates. These protists are known for their two flagella and can contaminate shellfish, such as oysters, leading to human poisoning when consumed.

After a Meal of Raw Oysters, a Woman Begins to Feel