Ounces?
Really, 0.1 ounces? The scientists did their work in the caveman measuring system that we use here in the US rather than using metric? Does the author even have a concept of what she's writing about when dazzling us with "as little as 0.1 ounces of saliva?" Just to put it into a proper perspective, I assume it's 0.1 FLUID ounces, which is 3 mL. One teaspoon of liquid is defined as 5 mL. So in forensic terms, almost a teaspoon full of saliva is "little?" Unless you're drooling, you won't leave 3 mL of saliva anywhere, not even with a bite. Microarrays which were used in this study are a highly sensitive methodology, so Ms. Shin should recheck her figures. I like SmartPlanet, but this is yet another reason why metric system should be used on this site either exclusively or in conjunction with US customary measurements. Translating between two measurement systems, neither of which one's familiar with, leads to errors like these.