CD1

CD1 (cluster of differentiation 1) is a family of glycoproteins expressed on the surface of various human antigen-presenting cells. They are related to the class I MHC molecules, and are involved in the presentation of lipid antigens to T cells. However their precise function is unknown.

Types

CD1 glycoproteins can be classified primarily into two groups which differ in their lipid anchoring.

CD1e is an intermediate form, expressed intracellularly, the role of which is currently unclear.

In humans

Group 1

Group 1 CD1 molecules have been shown to present foreign lipid antigens, and specifically a number of mycobacterial cell wall components, to CD1-specific T cells.

Group 2

The natural antigens of group 2 CD1 are not well-characterized, but a synthetic glycolipid, alpha-galactosylceramide, originally isolated from a compound found in a marine sponge, has strong biologic activity.

Deep Dish

"Deep Dish" may refer to:

Greatest hits album

A greatest hits album, sometimes called a "best of" album or a catalog album, is a compilation of songs by a particular artist or band. Most often the track list contains previously released recordings with a high degree of notability. However, to increase the appeal, especially to people who already own the original release, it is common to include remixes and/or alternate takes of popular songs; even new material (previously unreleased). At times a greatest hits compilation is the original release for songs that have themselves been released as a single and charted successfully.

Notable compilations

Madonna's The Immaculate Collection is the best selling greatest hits compilation by a solo artist; all of the songs on it are presented in different versions than the original hit versions. The Eagles' Their Greatest Hits (1971–1975) is the best selling greatest hits compilation by a group and also one of the ten best selling albums in history. Greatest hits albums are typically produced after an artist has had enough successful songs to fill out an album release. Some artists, such as Mariah Carey, Madonna, Janet Jackson, Britney Spears, Elvis Presley, Michael Jackson, The Beatles, Kenny Rogers, Aerosmith, Kiss, U2, Dolly Parton, Journey, Los Tigres del Norte, Queen, Kylie Minogue and Billy Joel, have released multiple greatest hits albums through their long careers. Some greatest hits albums are released only at the end of the artist or group's career. For example, My Chemical Romance released a greatest hits album after they disbanded. Other artists, like Eminem have released hits albums in the center of their success. He released Curtain Call: The Hits in 2005 and then Shady XV as a compilation album in 2014.

Radio edit

In music, a radio edit is a modification, typically truncated, to make a song more suitable for airplay, whether it be adjusted for length, profanity, subject matter, instrumentation, or form. Radio edits may also be used for commercial single versions, which may be denoted as the 7" version. However, not all "radio edit" tracks are played on radio.

Editing for time

Radio edits often shorten a long song in order to make it more commercially viable for radio stations. The normal length for songs played on the radio is 3 to 4 minutes. Occasionally, the song will simply fade out earlier, common on tracks with long instrumental endings. For instance, the radio edit of 'Heroes' by David Bowie fades in shortly before the beginning of the third verse and fades out shortly before the vocal vamping at the end of the song. Another example is B.o.B's song, "Nothin' On You" featuring Bruno Mars, whose radio edit skips the first 5 seconds & starts with the 6th second in which Bruno Mars starts singing the first chorus. The second half of the first chorus is sometimes skipped, along with the last 24 seconds which is the normal fade-out part in which B.o.B says, "Yeah, and that's just how we do it/And I'ma let this ride/B.o.B and Bruno Mars", and the radio edit ends with the fourth and last chorus with an earlier fade-out. A 3rd example would be the song, "The Man" by Aloe Blacc, in which the radio edit skips the "I'm the man/Go ahead & tell everybody/What I'm saying ya all" part & the first 10 seconds. Also, the 3rd chorus of the song is shortened. However, many radio edits will also edit out verses, bridges, and interludes, such as the original single edit of "Piano Man" by Billy Joel which substitutes the end of the third verse for the ending of the second verse. Another example for this case is Justin Timberlake's "Mirrors", where the radio edit cuts the entire "You are the love of my life" part.