Based on the intrinsic characteristics of the protein data, we have designed an optimized hybrid database schema.
基于蛋白质数据的固有特点，我们设计了一种优化的混合数据库模式。
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Scientists think the protein may allow hybrid viruses to grow more efficiently in the lower temperatures of the upper respiratory tract, from which the virus can more easily spread to others.
The key difference in this study was the presence of a single gene from the H3N2 human virus: the PB2 protein, which gave the hybrid viruses the ability to spread easily among the lab mice.