C A OMWANDHO ET AL: 'Ovine placental eluate immunoglobulins recognise isologous and third party acid-treated trophoblast microvesicle antigens in vitro', JOURNAL OF THE SOUTH AFRICAN VETERINARY ASSOCIATION, vol. 77, no. 1, 6 June 2006 (2006-06-06), pages 24 - 27, XP055369775, DOI: 10.4102/jsava.v77i1.335