Paragraph 2
The map looks like a work of
. It is a beautiful
of neurons. Scientists sliced the fruit fly's
into 7,000 microscopic
. An electron microscope imaged cells that were four-
of a millimetre
. The researchers classified 8,400 cell
. The neural
would stretch for 150 metres. The human brain has 86 billion neurons and
of connections. It will be many years before
can map it.
