HLA-B50

HLA-B50 (B50) is an HLA-B serotype. B50 is a split antigen from the B21 broad antigen, the sister serotype B49. The serotype identifies the more common HLA-B*50 gene products. (For terminology help see: HLA-serotype tutorial)

Serotype

The B*5002 by serotype definition is a B45 serotype.

Allele distribution

References

B50

B50 or B-50 may be:

Sicilian Defence

The Sicilian Defence is a chess opening that begins with the moves:

The Sicilian is the most popular and best-scoring response to White's first move 1.e4. 1.d4 is a statistically more successful opening for white due to the high success rate of the Sicilian defence against 1.e4.New In Chess stated in its 2000 Yearbook that of the games in its database, White scored 56.1% in 296,200 games beginning 1.d4, but 54.1% in 349,855 games beginning 1.e4, mainly due to the Sicilian, which held White to a 52.3% score in 145,996 games.

17% of all games between grandmasters, and 25% of the games in the Chess Informant database, begin with the Sicilian. Almost one quarter of all games use the Sicilian Defence.

Grandmaster John Nunn attributes the Sicilian Defence's popularity to "its combative nature; in many lines Black is playing not just for equality, but for the advantage. The drawback is that White often obtains an early initiative, so Black has to take care not to fall victim to a quick attack." Grandmaster Jonathan Rowson considered why the Sicilian is the most successful response to 1.e4, even though 1...c5 develops no pieces, and the pawn on c5 controls only d4 and b4. Rowson writes:

HLA

HLA may refer to:

Biochemistry

Computing

Engineering

People

Politics

HLA (radio station)

Coordinates: 36°23′15″N 127°21′59″E / 36.38753°N 127.36650°E / 36.38753; 127.36650 (HLA time signal antenna) HLA is a time signal radio station in Daejeon, South Korea, operated by the Korea Research Institute of Standards and Science. Established on November 24, 1984, it transmits a 2 kW signal on 5 MHz (±0.01 Hz). Originally only transmitted for 7 hours per day (01:00–08:00), 5 days per week (M–F), it is continuous as of 2011, There are over 100 users of the signal in Korea.

It broadcasts a time signal similar to that of the WWV and WWVH stations with which it shares a frequency:

References

External links