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They aren't the oldestknown fossils of hominids -- as prehuman species and their relativesare called -- but constitute the most complete set discovered so far.

这些化石并不是已知最早的原始人化石，但却是迄今发现的原始人化石中最完整的。

SDS-PAGE analysis revealed that with IPTG induction, the recombinant strain harboring the plasmid pPel9A could express the target protein (130 000), with the molecular weight same as the expected pectate lyase protein.

重组菌经IPTG诱导和SDS-PAGE分析表达的蛋白质的相对分子质量为130 000，与预期相对分子质量相符。