The invention also provides {HEAD ~ compositions} and methods for determining {TAIL ~ the presence} of E. canis antigens and antibodies 
for determining
The invention also provides { HEAD ~ compositions } and methods for determining { TAIL ~ the presence } of E. canis antigens and antibodies
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH