1.   He was right, but before an effective vaccine could be made, previously intractable questions had to be answered.

2.   Meanwhile, Wellcome was undergoing its own strategic review and had Decided to get out of making vaccines.

3.   Nor did they record exactly how they made the vaccine.

4.   There is, it is clear, more than one way to make a vaccine against schistosomiasis.

5.   Yet Mycobacterium leprae has proved resistant to attempts to grow it in the laboratory, seriously hampering efforts to make vaccines.

6.   American Cyanamid makes several vaccines and sells Centrum vitamins and Fibercon laxatives.

7.   And it would have been a one-time event because standard polio vaccines were not made from chimpanzee tissues.

8.   And they will only make the vaccines if they are protected against liability, two drug industry officials, who insisted on anonymity, said Thursday.

9.   Another is, which strains of HIV should be used in making the vaccine?

10.   And virologists around the world have been burning the midnight oil for several weeks, studying the strain and attempting to make a vaccine for it.