CellRx in the UK working on growth factors for cell cultured meat, using a variety of expression systems from genetically engineered plants to fungi, yeast, and bacteria. “But I think we are well positioned because we've been doing this for a few years," said Ravi, who said Richcore is also working with several food companies in the emerging precision fermentation space, offering its R&D, scale-up and manufacturing expertise to help them scale up. " We're not starting from scratch. We also do a lot of high throughput screening [of microbial hosts] to identify the strains of bacteria, yeast and fungi that will give the best yield of factors.”