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Internal transcribed spacer (ITS) is the spacer DNA situated between the small-subunit ribosomal RNA (rRNA) and large-subunit rRNA genes in the chromosome or the corresponding transcribed region in the polycistronic rRNA precursor transcript.
Applicable standards are ASME B18.21.1, DIN 127 B, and United States Military Standard NASM 35338 (formerly MS 35338 and AN-935). [ 9 ] Spring washers are a left hand helix and allow the thread to be tightened in a right hand direction only, i.e. a clockwise direction.
Spacer DNA is a region of non-coding DNA between genes. [1] [2] The terms intergenic spacer (IGS) or non-transcribed spacer (NTS) are used particularly for the spacer DNA between the many tandemly repeated copies of the ribosomal RNA genes. [3] In bacteria, spacer DNA sequences are only a few nucleotides long.
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ID-Type-OD-Length. Where the ID is specified as a decimal, drill letter size, drill number size, or fraction; the OD is an integer that relates to a multiple of a 1 ⁄ 64 th of an inch (0.40 mm); the length is an integer that relates to a multiple of a 1 ⁄ 16 th of an inch.
C-mount lenses provide a male thread, which mates with a female thread on the camera. The thread is nominally 1 inch (25.4 mm) in diameter, with 32 threads per inch (0.794 mm pitch), designated as "1-32 UN 2A" in the ANSI B1.1 standard for unified screw threads. The flange focal distance is 17.526 millimetres (0.6900 in) for a C mount.