3Manwell C. Enzyme variability in the protochordate amphioxus I J]. Nature, 1975, 258:606 -608.
4Schmidtke J, Weiler C, Kunz B, et al. Isozymes of a eephalochordate as a test of poly-ploidisation in chordate evolution [J]. Nature, 1977, 266: 532-533.
5Shaw C R, Prasad R. Starch gel electrophoresis of enzymes: a compilation of recipes [ J]. Biochemical Genetics, 1970, 4 : 297 - 320.
6Xu Q S, Ma F, Wang Y Q. Morphological and 12S rRNA gene comparison of two Branchiostoma species in Xiamen wa- ters [ J]. Journal of Experimental Zoology (Molecular and Developmental Evolution), 2005, 304B: 259 -267.
7Zhang Q J, Zhong J, Fang S H, et al. Branchiostoma japonicum and B. belched are distinct lancelets ( Cephalochorda- ta) in Xiamen waters in China [ J]. Zoological Science, 2006, 23:573 -579.
