I am not trying to generate a controversy. You state natural news is not a valid source. Mike Adams at Natural News Has Spent Years Of His Productive Life Reporting On All Thing Health Related. If you don't think him a valid source- THAT IS YOUR OPINION.
It is Clear that Human Fetal Material Is Being Used In Food Products. If you choose to believe something else- that is YOUR CHOICE.
I mean , a reputable source , like an academic institution producing the data , or a journal , a primary source which produces original research .