I'm taking a look at SciHub based on your suggestion. I see that they have journals for various biology related fields.

I decided to take a look at the biotechnology journal https://scihub.org/ajbms/current-issue/

However, it seems the current issue is July 2017? Is it not updated frequently?

Thank you.

What is this regex looking for?:

re.compile('(?:#)([A-Za-z0-9_](?:(?:[A-Za-z0-9_]|(?:\.(?!\.))){0,28}(?:[A-Za-z0-9_]))?)')

hashtag, as the key name 'hashtag' states :)