What is the fine-grained topic of the following text: "From fermentation to harvesting and downstream purification through to stability testing, process validation, QA and regulatory support, Enteris has the technological capability and expertise to meet a wide array of customer needs and project specifications," says Paul Shields, Ph.D., vice president, operations of Enteris. Only return the topic.
Enteris' technological capabilities and expertise in various aspects of biopharmaceutical production.