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Class I MHC molecules are essential for
Complimentary Close
The polite closing words in a letter or email, such as "Sincerely" or "Best regards," before the signature.
Message
A unit of communication conveyed between users, typically through a medium such as email, chat, or notifications.
Date Line
Indicates the moment when the date changes on Earth, generally located in the Pacific Ocean.
Business Letter
A formal document used for communication between companies, or between a company and its clients, suppliers, or other external entities.
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