While your baby's first tooth is definitely a milestone, if you still breastfeed, you might have mixed feelings about this white, sharp little pearl. (easybabylife.com)
Psssst, yo, jeebus - freak, they also prevent the spread of disease, or was little pearl of wisdom not in your home school curriculum? (religion.blogs.cnn.com)
So I was pretty excited by a lovely little pearl in PLoS Pathogens last month discussing mycobacteriophages; the viruses that specifically attack mycobacteria. (scientificamerican.com)