Cell culture molecular biology primarily involves cultures of cells on flat plastic dishes. This technique is known as two-dimensional (2D) cell culture, and was first developed by Wilhelm Roux who, in 1885, removed a portion of the medullary plate of an embryonic chicken and maintained it in warm saline for several days on a flat glass plate. From the advance of polymer technology arose today's standard plastic dish for 2D cell culture, commonly known as the Petri dish. Julius Richard Petri, a German bacteriologist, is generally credited with this invention while working as an assistant to Robert Koch. Various researchers today also
Hell with the Lid Off Hell with the Lid Off Hell With the Lid Off, released in 1990 (see 1990 in music), is the first album by MC 900 Ft. Jesus collaborating with DJ Zero (For more information on DJ Zero, see MC 900 Ft. Jesus). "Hell With the Lid Off" was released on Nettwerk Records. It has a heaven-and-hell theme to it, and track titles repeatedly mention such topics as God, heaven, and angels. The songs themselves are often about mental illness, UFOs, voodoo, and violence; the comic delivery and tongue-in-cheek lyrics put this far outside the norm for a typical Nettwerk release. The