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Definition
| A genetic disease that occurs in a person homozygous for the sickle cell allele, which alters the structure of red blood cells. |
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Definition
| A disease caused by the introduction of an organic foreign substance into the body. |
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Term
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Definition
| A disease caused by factors other than the introduction of an organic foreign substance into the body. |
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Term
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Definition
| A form of farming in which only simple hand tools are used. |
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Term
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Definition
| The ability to produce the enzyme lactase after 5 years of age. |
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Term
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Definition
| A condition characterized by diarrhea, cramps, and other intestinal problems resulting from the ingestion of milk. |
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