Upload date
All time
Last hour
Today
This week
This month
This year
Type
All
Video
Channel
Playlist
Movie
Duration
Short (< 4 minutes)
Medium (4-20 minutes)
Long (> 20 minutes)
Sort by
Relevance
Rating
View count
Features
HD
Subtitles/CC
Creative Commons
3D
Live
4K
360°
VR180
HDR
3,403 results
I have to confess i kind of lied to you we don't have 20 amino acids we have 19. because this one proline i will keep referring it to ...
6,404 views
3 years ago
1,815 views