empty cells

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• clear cells — cells with empty appearing cytoplasm, seen normally in the secretory coil of sweat glands, in the parathyroid glands, and in the lining of the renal collecting tubules and epididymis; they also occur pathologically in some neoplastic conditions …   Medical dictionary

• Nonogram — Not to be confused with Nonagram or Nomogram. Example of a nonogram puzzle being solved. The steps of the process are grouped together a bit. Nonograms, also known as Hanjie, Paint by Numbers, or Griddlers, are picture logic puzzles in which …   Wikipedia

• Fillomino — (フィルオミノ) is a type of logic puzzle published by Nikoli. Other published titles for the puzzle include Allied Occupation . As of 2005, three books consisting entirely of Fillomino puzzles have been published by Nikoli.Rules Fillomino is played on… …   Wikipedia

• beekeeping — /bee kee ping/, n. the rearing and breeding of honeybees; apiculture. [1830 40; BEE1 + KEEPING] * * * or apiculture Care and manipulation of honeybees to enable them to produce and store more honey than they need so that the excess can be… …   Universalium

• Nagel-Schreckenberg model — The Nagel Schreckenberg model is a theoretical model for the simulation of freeway traffic. The model was developed in the early 90s by the German physicists Kai Nagel and Michael Schreckenberg[1]. It is essentially a simple cellular automaton… …   Wikipedia

• Entropy of mixing — The entropy of mixing is the change in the configuration entropy, an extensive thermodynamic quantity, when two different chemical substances or components are mixed. This entropy change must be positive since there is more uncertainty about the… …   Wikipedia

• Tic-tac-toe — Noughts and Crosses redirects here. For the series by Malorie Blackman, see Noughts Crosses series. Tic tac toe redirects here. For the band, see Tic Tac Toe (band). Tic tac toe Game play of Tic tac toe Genre(s) Paper and pencil game Players 2 …   Wikipedia

• Xylem — Multiple cross sections of a flowering plant stem showing primary and secondary xylem and phloem[1] Xylem is one of the two types of transport tissue in vascular plants. (Phloem is the other). The word xylem is derived from the Classical Greek… …   Wikipedia

• Evolutionary history of plants — Plants have evolved through increasing levels of complexity, from the earliest algal mats, through bryophytes, lycopods, ferns and gymnosperms to the complex angiosperms of today. While the simple plants continue to thrive, especially in the… …   Wikipedia

• Laying worker bee — A laying worker bee is a worker bee that lays unfertilized eggs usually in the absence of a queen bee. Only drones develop from the eggs of laying worker bees (with some exceptions, see thelytoky). A beehive cannot survive with only a laying… …   Wikipedia

• Comparison of layout engines (Cascading Style Sheets) — Cascading Style Sheets CSS Animations Dynamic CSS Comparison of layout engines Comparison of stylesheet languages Internet Explorer box model bug CSS Zen Garden The Zen of CSS Design CSSTidy Style sheet Tableless web design Holy Grail (web… …   Wikipedia