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This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
PA signal traces from melanoma cells (B16F10) in mouse blood with focused spherical (left) and cylindrical (right) ultrasound transducers with focal lengths of 6 mm and lateral resolution of ~60 µm. These data were obtained by Y. Menyaev.