00:03
So you're looking at a chart that obtained from a broth dilution test.
00:08
The first column is the concentration of the antibiotic x.
00:13
So you have four different concentrations, 2, 10, 15, and 25 micrograms per mil.
00:19
The second column is the growth in the tube.
00:22
So plus means there's growth, minus means there's no growth of the bacteria.
00:29
The third column is the growth in a subculture and on a petri dish.
00:35
So you can tell that for the growth in a tube, you see growth in 2 micrograms per mil, but there's no growth of the bacteria from 10 all the way to 25 micrograms per mil.
00:50
And the growth in a subculture has growth in 2 and 10 micrograms per mil, but 15 and 25 tubes have no growth.
01:00
So the question says that in the table above, the minimal bactericidal concentration of the antibiotic x is.
01:10
So the two columns here has a difference.
01:14
The tube growth actually indicates the minimal inhibitory concentration...