Cruciform

[1] DNA can undergo transitions to form a cruciform shape, including a structure called a Holliday junction.

This structure is important for the critical biological processes of DNA recombination and repair mutations that occur in the cell.

It was very popular due to the protection it offered to the hand and certain attacks that rely on the cross to trap the blade of the enemy.

In addition to common cross-shaped products, such as key chains and magnets, certain designers have gone so far as to create cruciform devices and accessories.

For example, the mass-produced cruciform MP3 player "Saint B", or the "iBelieve", an accessory that converts the original iPod Shuffle into a cross shape designed by Scott Wilson in 2005.

The cruciform MP3 players often come preloaded with audio files of the New Testament, but are mainly purchased for users to proudly display their faith.