Gritstone used in a sentence

Gritstone in a sentence as a noun

Katy and Pete, both young teens when the video was made, were cutting their teeth on the nervy, often dangerous gritstone routes in England.

Aduro, immune design, biontech, moderna, neon, gritstone, 3t biosciences and others are involvedDelivery options are most commonly autologous cell therapy but this is super expensive and it is very hard to get consistent product.