what is a probe in molecular biology?
Please help improve the article with a good introductory style. (October 2009) (Learn how and when to remove this template message) A molecular probe is a group of atoms or molecules used in molecular biology or chemistry to study the properties of other molecules or structures.
Noun. 1. space probe-a rocket-propelled guided missile that can escape the earth's atmosphere; makes observations of the solar system that cannot be made by terrestrial observation. guided missile-a rocket-propelled missile whose path can be controlled during flight either by radio signals or by internal homing devices.