[Electron microscopic and biochemical study of spheroplasts of the blue-green alga Anabaena variabilis].

Electron microscopy of the spheroplasts of the blue-green alga Anabaena variabilis revealed damages induced by lysozyme. Biochemical analysis confirmed the data of electron microscopy that the spheroplasts had lost partly the cytoplasmic content of the cells. DNA was preserved in the spheroplasts though the nucleoid was not detected by electron microscopy.