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Provide a structure of the dipeptide Ala-Ser.
20th Century
A period extending from January 1, 1901, to December 31, 2000, marked by significant technological, social, and political changes worldwide.
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Expenditures made by the government of a country on national-level services and projects.
Medicare
A federal health insurance program in the United States for people aged 65 and older, certain younger people with disabilities, and people with End-Stage Renal Disease.
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A government-funded program in the United States that provides health insurance to low-income individuals and families.
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