Table 6.

End point titration test (EPTT)

Extract/Serum				ANTIVIRAL ACTIVITY
	Log TCID50 Titer			Viral Titer Reduction Factor (TRF)
	MNTD	MDIC	TFDMNTD	MNTD	MDIC	TFDMNTD
27–135D	2.3	3.5	2.5	1000	100	1000
Zanthoxylum (seed) Ethanol Extract	4.5	4.5	4.5	100	100	100
27–163D	3.5	4.5	4.5	100	10	10
Warburgia ugandensis Water extract	4.5	4.5	4.5	10	10	10
W. ugandensis ethanol extract	3.5	3.5	2.5	1	1	1
Measles Antiserum	2.5	3.5	2.5	1000	100	1000

(1) MNTD = Maximal Non toxic dose

(2) MDIC = Maximal dilution to inhibit CPE.

(3) CPE = Cyto pathic effect

(4) TFDMNTD = Two fold dilution of the maximal Non toxic dose

(5) $\text{TRF = }\frac{\text{Titer of Virus control}}{\text{Titer of (Extract + Virus Mixture)}}$

(6) TCID₅₀ titer of virus = 10^5.5 per 0.05ml.