When we talk about stem cells, we are actually talking about a complicated series of things, including adult stem cells which are largely cells devoted to replacing individual tissues like blood elements or liver or even the brain.
Talking back and being quite aggressive about stuff and not giving a care in the world about anyone. So it was more, I think, that way and I think that's what happened in that party when I stood in between two people.
When we're dealing with the people in our family - no matter how annoying or gross they may be, no matter how self-inflicted their suffering may appear, no matter how afflicted they are with ignorance, prejudice or nose hairs - we give from the deepest parts of ourselves.