00678naa a2200229 a 450000100080000000500110000800800410001902200140006010000200007424501430009426000090023730000070024649000070025365000110026065000140027165300140028570000190029970000180031870000170033670000190035377300760037216297312009-11-03 1993 bl --- 0-- u #d a0002-06451 aCHEVILLE, N. F. aImmune responses and protection against infection and abortion in cattle experimentally vaccinated with mutant strains of Brucella abortus c1993 a54 v54 aBovino aImunidade aBurcelose1 aSTEVENS, M. G.1 aJENSEN, A. E.1 aTATUM, F. M.1 aHALLING, S. M. tAmerican Journal Veterinary Researchgv. 54, n. 10, p. 1591-1597, 1993.