A good portion of their activities a VERY much focussed on problem wound care. The have the size and reach that the TIS needs to capture a good bite of this market. They have amongst the most globally to gain should they align with and market Vitrogro. (even though it may make a bunch of their current products obsolete) Accordingly they also have a lot to lose should it go to a competitor.
Further, on rummaging about on the S@N site there is a lot of the same language used in talking about wound care that TIS use in thier presentations. I was going to copy and past a whole bunch of potential linkages between the two companies but its best if the Tissarians just have a look for them selves