Histone H3 along with H2A, H2B, and H4 form the eukaryotic nucleosome octamer core.

组蛋白 H3 与 H2A，H2B，H4 共同构成了真核生物核小体的八聚体核心。

youdao

Histone H4 is one of five histone groups.

H 4组蛋白就是五个组蛋白团之一。

youdao

Objective to review the research on histamine H4 receptor ligands.

目的：阐述组胺h 4受体配体的研究进展。

youdao

Harrison radically re-thought his design and produced H4, a timekeeper that resembled a large pocket watch.

BBC: Longitude clock comes alive

Yet, 200 years ago, H4's accuracy would have seemed, as it did to the astronomers, simply unbelievable.

BBC: Time to make history

"What it does is it brings things into a more realistic perspective, " says Neale Smiles, business director of military training company H4 Global.

BBC: Star Trek 'holodeck' in the living room?