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
Sač process. The word "sač", can also refer to a dish made of meat, vegetables and potatoes, baked in sač oven. In Bulgaria, the word "сач" or "сачѐ" (sach/sache) refers to a flat clay plate, which is heated to a high temperature, and placed on the table, where thin slices of vegetables and meat are cooked on it. Fat is not used, and it is not covered. In the region of the Rhodopes typically more meat is used. Sač Sač is a large metal or ceramic lid like a shallow bell with which bread dough or meat to be baked are