Dark Matter Missing

https://www.sciencedaily.com/releases/2018/03/180328130724.htm

Galaxies and Dark matter go together like peanut butter and jelly, but what happens when you have a galaxy without the dark matter? The results are a transparent galaxy.

If this is true, what are the implications on our current knowledge of the relationship between the two? Check out the article from Science Daily to find out more!