hairpin

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hair·pin

( hār'pin),
1. The structure formed by a polynucleic acid by base-pairing between neighboring complementary sequences of a single strand of either DNA or RNA.
2. The structure seen in a prostaglandin where two segments of the molecule fold back on one another.
Hairpinclick for a larger image
Fig. 187 Hairpin . (a) Hairpin. (b) Hairpin loop.

hairpin

a double-stranded structure found in single-stranded NUCLEIC ACID molecules, due to BASE PAIRING between adjacent complementary sequences. The two sequences are inversely arranged and may be directly adjacent, as in a PALINDROME, or interrupted by a non-complementary sequence. In the former case a double-stranded segment (hairpin) is generated; in the latter a hairpin-loop structure forms.
References in periodicals archive ?
The other foreign bodies found in this region included hair pins (8%), marbles (4%), iron wires (4%), battery lead terminals (4%), safety pins (4%), buttons (4%), bones (4%) and rings (4%).
Teamed with a orange bag, EUR50, and a black hair pin, EUR12, both from the accessories department in Clery's, this outfit is sure to keep all eyes on you.
Gold hair pin (used as brooch) from a selection at Johnny Loves Rosie: 020 7375 3574.
Otto used hair pins to keep the slices of bread together in the hope it would prevent staleness, but it was when he hit upon the idea of wrapping the loaf in a wax paper that interest began to increase.
Use multiples of the same small or medium-sized clip or hair pins, placing them close together on one side so it almost looks like one larger accessory, or place on opposite sides of the head.
I styled it with smiley face Swarovski hair pins and ASOS heels that read 'he was like' and 'I was like'; I thought that was apt for the event," she shares.