PBS
Phosphate-buffered saline
Public Broadcasting Service

how did you draw these graphs ?

this is what i love about here :)

Lol! Yep. Or even getting excited by someone liking a comment you made, even if they didn't follow you. I think it's so cool that some authors like Neil Gaiman and John Scalzi are so interactive on here so far, and knowing that they saw or read something you posted is awesome.

:)

interesting, I think CRISPR has been used widely to identify these pathways.

in persian evolution word translated to "تکامل" that literally means improvement and after several years they had to alter the word to "فرگشت" that means changing, either in a positive or negative direction.