If red lines develop, that's a sign the infection is spreading and needs immediate medical attention.

Two other lines started to form, but did not fully develop.

With the advancing cold front, two lines of thunderstorms developed.

The lateral line is incomplete, but well developed in some species.

These lines may have developed as other glaciers moved down valleys.

The line quickly developed into one of the busiest lines in central Germany.

And if a green defensive line develops, perhaps the Pride can stop opponents enough to let the offense take charge.

Inside the office, more lines developed as people waited to file their applications and pay the $185 fee.

The line had developed as something of an in-joke.

The third line repeats the first and the fourth line develops the second.