Identification of the 1B vaccine strain of Chlamydia abortus in aborted placentas during the investigation of toxaemic and systemic disease in sheep

Authors:

• Sargison, N.D.

• Truyers, I.G.R.

• Howie, F.E.

• Thomson, J.R.

• Cox, A.L.

• Livingstone, M.

• Longbottom, D.