Walter McCrone, a member of the team, upon analyzing the samples he had, concluded in 1979 that the image is actually made up of billions of submicron pigment particles.

小组的一位成员沃尔特，分析了他所持有的样本，在1979年作出了结论，指出肖像实际上是由数十亿个超微末微料色素染成的。

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The government ordered the review 10 years after the the landmark McCrone agreement on teacher conditions.

BBC: McCormac review recommends more teacher flexibility

It will also consider whether McCrone is suited to the newly-introduced Curriculum for Excellence.

BBC: Review of McCrone teaching deal announced

The original McCrone deal agreed between councils and teaching unions, guaranteed teachers more than 12 hours a week to spend marking and preparing lessons in school.

BBC: Review of McCrone teaching deal announced