U+1F170 U+FE0F "🅰️" A Button (Blood Type) Emoji

The "U+1F170 U+FE0F "🅰️" A Button (Blood Type)" emoji is a squared red symbol containing a white capital letter A, commonly used to represent the A blood type in medical or donor contexts. It can also serve as a generic button icon for options, selections, or grading, and sometimes appears in lists or interfaces as a simple labeled key. Because of its clear letterform, it is frequently used for alphabetical ordering or as a visual stand-in for the word "A" in casual text.

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