The round blue cells are the normal apple cells. The brown mass round and between them is callus hair growth. The callus hairs remain full of starch even though the normal cells have lost their starch during storage. This is a light microscopy image. Scientists in the United Kingdom have discovered clumps of unusual cells in the flesh of Fuji apples that they think might affect storage of the fruit. Dr. Mary Parker, a researcher at the Institute of Food Research in Norwich, England, notes that in some years, Fuji apples—particularly large, late-harvested fruit—are vulnerable to internal browning during controlled-atmosphere […]