There is a space between a peribacteroid membrane and a bacteroid cell wall, the size of spaces is variable in different bacteroids or the different parts of a bacteroid.
Two or more folds parallel to each other with adjacent folds in opposite directions, resembling the bellows of an accordion. Alternative term: fanfold.
The light travels to the laser cavity, a portion of the fiber optic cable that's doped with rare earth elements where broad spectrum light is transformed into that of a single wavelength.
The cells of the serous pericardium secrete and reabsorb the fluid, so usually there's no more than 50 milliliters of fluid in the pericardial cavity at one time - that's about as much as a shot glass.
And although Americans tend to put their right hand over their left breast while pledging allegiance, the heart is actually situated pretty much in the center of your chest, snuggled in the mediastinum cavity between your lungs.
The captain alone was familiar with the cave where this wonderful fruit of nature was ripening; he alone reared it, so to speak, in order to transfer it one day to his dearly beloved museum.
When you stretch your back the capsule in these joints stretches too and decreases the pressure in the joint space, which makes any gas suddenly come out of solution, making a cracking sound!
In the darkness of night, Hylton has captured images of birds like this quizzical collared scops owl, insects like the Atlas moth and snakes like this white-lipped pit viper.
The sound of a wind instrument comes from the vibration of an air column in an almost closed cavity pierced with narrow slits that allow notes to be produced.