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BERLIN, GERMANY - DECEMBER 01: An employee shows a customer a sticker with the (RED) logo at the Apple Store on December 1, 2014 in Berlin, Germany. On World AIDS Day, December 1, Apple is donating a portion of sales at the company's retail and online stores around the world to a global fund to fight the disease. In addition, for the following two weeks, the company, in cooperation with the brand Product Red, also known as (RED), will offer 25 apps for sale whose proceeds will go directly to the initiative. (Photo by Adam Berry/Getty Images for Apple)

BERLIN, GERMANY - DECEMBER 01:  An employee shows a customer a sticker with the (RED) logo at the Apple Store on December 1, 2014 in Berlin, Germany. On World AIDS Day, December 1, Apple is donating a portion of sales at the company's retail and online stores around the world to a global fund to fight the disease. In addition, for the following two weeks, the company, in cooperation with the brand Product Red, also known as (RED), will offer 25 apps for sale whose proceeds will go directly to the initiative.  (Photo by Adam Berry/Getty Images for Apple)