Human beings like stories. We think narratively. If there isn't a beginning, middle, and end, we try and create them from the information we have at hand, because things happen in time and, we like to think, with purpose and significance. Life science research takes as its subject living things, and all living things have a life cycle, at the end of which they die, just like in a story. There is no stasis, and nothing in real life happens in a clean room: living things interact with other living things and physical processes in what we sometimes call ecosystems, which are messy, elegant places of contingency and interdependence.
Why is this important to what you do in a day, or to the life scientist's work in his or her lab? It's a reminder, that however specialized someone's research is, or however much you manage to condense your product's virtues into a series of bulleted words or half-phrases, there is always a bigger narrative in the background, and it pays not to lose sight of it. Because narrative is not just a way of organizing things in time, it's about communicating, and that's what people do with each other. Even scientists. And if you're in sales, especially, you want to make that connection with a customer that turns into a relationship, so any opportunity to humanize (let's say narrativize) your interaction with that scientist is valuable.