Reply to Herd of Swine: thank you for clarifying your note and that you do not intend to discount my contributions.  As it happens, I did not come across this article randomly, I found it by following a link in an article about a bacteria used to transfer DNA for genetic engineering of plants. 

 Reply in general in regards to including the links:   It appears that the question has already been discussed in detail, and that each side of the debate are pretty much decided in their positions.  I doubt that anything I could write would change anyone's mind, and probably most of the information has already been dug up already. It appears to be just a question of waiting for more people to come along and offer their opinions about it to break the tie.   The posts by Levine2112 seem to me to adequately cover the way I understand the situation, in particular his or her  summary at time stamp ''''.  So in determining consensus at whatever point in this process that happens, my recommendation is that both external links be removed.