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50.7 MB (1.1 MB compressed)
4232 x 4191 pixels
35.8 x 35.6 cm ⏐ 14.1 x 14.0 in (300dpi)
R. BICK, B. POINDEXTER, B. FRAZIER (TEXAS HEART INSTITUTE), UT MEDICAL SCHOOL / SCIENCE PHOTO LIBRARY R. BICK, B. POINDEXTER, B. FRAZIER (TEXAS HEART INSTITUTE), UT MEDICAL SCHOOL / SCIENCE PHOTO LIBRARY
Heart muscle. Fluorescence deconvolution micrograph of a section through heart muscle (myocardium) showing contractile myosin (green), myocyte (muscle cell) nuclei (blue) and adrenoreceptors (red). Adrenoreceptors respond to adrenalin, causing a sympathetic (fight or flight) response. This makes the heart beat harder when adrenalin levels rise. Magnification: x600 when printed at 10 centimetres wide.
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