Human cells are extremely small and tightly packed – at about 20 micrometers across, roughly one-fifth the width of a human ...
Scientists have crossed a startling new frontier in bioengineering: they can now fabricate intricate three-dimensional ...
In the beginning, there was boredom. Following the emergence of cellular life on earth, some 3.5 billion years ago, simple cells lacking a nucleus and other detailed internal structure dominated the ...