This is a very laborious and exacting technique and, to date, it has only been used with a few plants.

The film was also delayed in its release (owing partly to the use of solarisation, a then-new technique both laborious and expensive), and badly under-promoted.

Each fish has 769 bones, and most recipes involve laborious techniques to melt them.

He had used a laborious technique that called for thorough cleaning after each round fired to 'break in' the bore.

But modern scientists no longer depend on the long, laborious, unpredictable technique of traditional plant breeding - a 25-year process - to introduce new genes into crops like the potato.

Currently researchers use laborious experimental techniques to reveal the positions of each atom in the protein, and structures have been determined for only a small fraction of known proteins.

In the past, such visualization could be done conventionally by filling neurons with Lucifer yellow or sulforhodamine, which is a laborious technique.

Also known as stop-frame animation, it is a laborious technique in which puppets are moved in small increments and photographed frame by frame.

Mr. Alvarado's is a laborious technique involving layer upon layer of acrylic and the occasional addition of branches and slabs of wood.