Developing heart cell, fluorescence deconvolution micrograph. Fluorescent dyes have been used to highlight cellular structures and proteins: actin (green), cell nucleus (blue), protein synthesis (red and yellow). Actin is a contractile muscle protein. Protein synthesis is carried out using instructions encoded in the cell nucleus. This heart muscle cell is from a newborn baby, and is still developing and maturing into one of several specialised roles carried out by various types of heart cells.
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