Frequency - Word Form
 20 1
 20 identity
 20 l
 19 patient
 19 primates
 19 therefore
 19 they
 19 will
 18 acute
 18 however
 18 hyperacute
 18 moral
 18 p
 18 patients
 18 these
 18 transplanted
 17 c
 17 f
 17 its
 17 more
 17 new
 17 other
 17 recipient
 17 species
 17 vascular
 17 would
 17 xenografts
 16 1998
 16 1999
 16 humans
 16 order
 16 those
 16 transplants
 16 xenograft
 15 1995
 15 baboon
 15 bhatti
 15 life
 15 nature