1. Ausubel FM, Brent R, Kingston RE, Moore DD, Seidman JD, Smith JA, Struhl K (1987) Current protocols in molecular biology, Greene Publishing Associates and Wiley-Interscience, New York, 3.14.1?3.14.4.
2. Araki S, Sakurai T, Oohusa T, Sato N (1992) Comparative restriction endonuclease analysis of rhodoplast DNA from different species ofPorphyra (Bangiales, Rhodophyta). Nippon Suisan Gakkaishi. 58:477?480.
3. Boehringer Mannheim (1990) Reagents for molecular biology (catalog), Boehringer Mannheim Co. Indianapolis, 255 pp.
4. Bold HC, Wynne MJ (1978) Introduction to the algae. Structure and reproduction, Prentice-Hall Inc. New Jersey, 454 pp.
5. Brasch DJ, Chang HM, Chuah CT, Melton LD (1981) The galactan sulfate from the edible red algaPorphyra columbina. Carbohydrate Research 97: 113?125.