Back in the day, bacterial diseases like dysentery were super deadly, but the nomadic people in northern Africa had long known about an effective, if hard to swallow, cure.

Back in the day, bacterial diseases like dysentery were super deadly, but the nomadic people in northern Africa had long known about an effective, if hard to swallow, cure.

XLD agar (Xylose Lysine Deoxycholate agar) is a selective and differential medium used primarily for isolating and differentiating Salmonella and Shigella species. It differentiates organisms based on xylose fermentation, lysine...

So we know that there are unbelievable numbers of bacteria inside of us, and some of them are good. So what about the bad ones? What do those do? How do they harm us, exactly? What defenses do we have against them? Let's take a look!