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Rights: Peter Dearden Published 28 June 2011 Size: 24 KB

Queen bee ovariole imaged on a confocal microscope. This type of image helps scientists understand how the ovary works in a bee and how it responds to environmental signals that repress or activate it. The red staining is DNA. The green is a stain for cortical actin, which marks the boundaries of cells in most cases. The section with the prominent red-stained nuclei is the nurse cell cluster. These cells are making RNA and protein and transporting them into the adjacent cells.