The French word héros (hero) begins by an aspirated h. Consequently we can say le héros IPA: /lə e.ʁo/ and les héros IPA: /le e.ʁo/, but never IPA: /l‿e.ʁo/ and IPA: /le‿ze.ʁo/, like we do with the mute h.
There is no doubt that the uncertainty about the letter H, which much defaces English in some classes of the community, is due entirely to Norman influence, for Frenchmen could not aspirate. Three words—hour, honor, heir, with compounds of them such as hourly, honourable, heirship, and the like, are quite enough to puzzle people who find H sometimes sounded, sometimes not.
Scrape cells using a cell scraper and aspirate the resulting slurry into a 2.0-mL Eppendorf tube.