[Research progresses of the synthesis and application of oligopeptide containing Arg-Gly-Asp sequence].

Arg-Gly-Asp (RGD) is one of the oligopeptides with biological activity found in recent years. It is the minimum ammonia serial on the ligand, which can be recognized by most of the integrins. It has important influence on the recognition of endothelial cell, anti-thrombus and anti-tumour function, and the therapy of burn and skin helcosis.

GENE DISPERSAL AND SPATIAL GENETIC STRUCTURE.

Spatial autocorrelation statistics have been studied in theoretical population genetic models and widely used in experimental studies of spatial structure in many plant and animal populations. However, the statistical properties of spatial autocorrelation statistics have remained uncharacterized. Little is known about how values of spatial autocorrelation statistics in population samples depend on the level of dispersal and scheme of sampling.