Scanning electron microscopy (SEM) of<unk> s.<unk>  compared to other forms of poikilocytosis.<unk>  (from the Greek word echinos, meaning 'hedgehog' or 'sea urchin'), in human biology and medicine, refers to a form of red blood cell that has an abnormal cell membrane characterized by many small, evenly spaced thorny projections. A more common term for these cells is burr cells.
Echinocyte
Koilocyte
Nurse cell
Elliptocyte
Podocyte
Acanthocyte
Clue cell
Melanocyte