Table 3. Comparison of the protein bands detected by anti-ureaplasma IgG antibodies in maternal serum when probed against whole ureaplasma protein extract or MBA-negative ureaplasma protein extract.

		PROTEIN BANDS RECOGNISED BY MATERNAL SERUM WHEN PROBED AGAINST:
ANIMAL #	TREATMENT GROUP	Whole ureaplasma protein extract	MBA-negative ureaplasma protein extract
2	Avirulent	45 kDa, 87 kDa	45 kDa
29	Avirulent	80 kDa	N/A
91	Avirulent	45 kDa	45 kDa
102	Avirulent	70 kDa	N/A
42	Virulent	50 kDa	45 kDa
66	Virulent	55 kDa, 62 kDa, 87 kDa	N/A
83	Virulent	45 kDa, 50 kDa	45 kDa
85	Virulent	45 kDa, 50 kDa, 55 kDa, 60 kDa	N/A
96	Virulent	50 kDa, 55 kDa, 60 kDa	45 kDa

Those proteins indicated in bold were detected in western blots using both whole ureaplasma and MBA negative ureaplasma protein extracts. kDa = kilodaltons.