Fig. 1From: Evaluating the performance of a low-cost mobile phone attachable microscope in cervical cytologyThe Foldscope. Assembled paper-based Foldscope (top left). Foldscope phone coupler taped onto a smart phone (top right). Placing the slide within the slide holding apparatus (lower left). Foldscope ball lens comparison with a penny, ball lens is a 2.2 mm borosilicate lens (bottom right)Back to article page