Abstract
Selected popula-tions were typed for group specific components (Gc) using immuno-electrophoresis. The Gc1 frequencies were as follows:. Singapore Chinese (201) 0.7562, Singapore Malays (51) 0.8431, Hong Kong Chinese (72) 0.7986, Sydney Whites (342) 0.7222 and Cook Islanders (91) 0.7527. No variant Gc-phenotypes were encountered.