1.   And a haemoglobin molecule has only a minute fraction of the complexity of a living body.

2.   Drug entrepreneurs can always afford to pay more since the cost of the raw material is a minute fraction of the wholesale price of the delivered product.

3.   But those objects represent only a minute fraction of the missing matter.

4.   Only a minute fraction of people earn decent salaries, governments have little revenue, most factories are idle, foreign aid has been patchy.

5.   There was uncertainty, however, about whether the two groups studied exactly the same minute fractions of the meteorite.