Double-immunofluorescence staining using patients’ sera and polyclonal rabbit anti-caspr (Abcam, Cambridge, UK, 1:1,000) or polyclonal rabbit anti-pan-neurofascin (Abcam, 1:400) was performed to detect paranodes.

The passive voice is sometimes criticized for de-emphasizing the actor. [is ... criticized is passive.]

Like most human activities, ballooning has sponsored heroes and hucksters and a good deal in between. For every dedicated scientist patiently recording atmospheric pressure and wind speed while shivering at high altitudes, there is a carnival barker with a bevy of pretty girls willing to dangle from a basket or parachute down to earth.

These bitches is getting truculent. (Referring to women in bin Laden’s compound.)