Oh, I like this one even if I had to use the dictionary to read it (my Spanish isn't that good; I learned it more than 30 years ago) - I'd really love to respond to your post in Spanish.
There is one that you didn't mention, but you still might. Humans are inhabited by trillions of bacteria by birth that make us healthy or sick.
Check TED Talk or the end of this post
https://steemit.com/geoengineeringseries/@irastra/geoengineering-series-8-photographic-intermezzo-for-the-1-10