:FWIW - yes, I agree - I added this not too long ago (June 20, 2013) - but was reverted (perhaps for good reason?) - if interested, the earlier edit was as follows: 

  
 Copied from June 20, 2013 article revision. 

 On June 19, 2013, scientists reported that the reason "cancerproof" laboratory animals do not get cancer may be because they produce an "extremely high-molecular-mass hyaluronan", which is over "five times larger" than that in cancer-prone humans and cancer-susceptible laboratory animals.< ref name="NYT-20130619">< ref name="NATURE-20130619"> 

  
 :in any case - Enjoy! )