Popcorn cells

The H/RSCs in NLPHL (also known as popcorn cells or lymphocytic and histiocytic (L H) cells because of their distinctive morphology) generally express leukocyte common antigen (LCA) or CD45 (Fig. 5.3). In all cases of NLPHL and in a small number of CHL cases, there is an expression of B-cell antigen CD20 by the H/ RSCs (Fig. 5.4).CD45 is usually absent or weakly expressed in a minor subset of H/RSCs in CHL (Fig. 

Rheologically speaking, solid is a term that needs to be used with caution. An albumen foam and whipped cream, under most circumstances, do not flow under their own weight and are therefore solid in a certain sense. Yet, upon disintegration, they leave behind a liquid. This is in contrast with puffed cereals and snacks, pieces of ffeeze-dried vegetables or chicken, and agglomerated, spray dried or instant coffee particles. These, if grormd, would leave a powder made of solid particles. But what about fresh bread, cakes, marshmallows and popcorn We will consider them solids despite the fact that their cell wall material is plasticized. 

Nussinovitch, A., Cohen, G., and Peleg, M. (1991). Comparison of the compressive characteristies of puffed popcorn and polystyrene foam particles. J. Cell. Plast., 27, 527-539. 

FIGURE 5.2 Nodular lymphocyte predominance Hodgkin lymphoma. (A) Low magnification showing nodular pattern. (B) Popcorn variants of Hodgkin/Reed-Sternberg cells. 

The polystyrene beads are normally white with a texture very similar to popcorn or expanded breakfast cereals. (See Fig. 1.) Unlike many of the various plastic foams, some of which have been used to insulate tops of cryostats [2], they have a very small cell diameter, observed to be under 40 /ll. Interference colors are produced by some of the cell walls indicating their thickness to be near the wavelength of light. The surface of the bead is quite smooth and has a... 

As those unfortunate rescue workers peered at the reactor core, invisible particles pelted them. The particles were emitted by uranium atoms whose nuclei are like popcorn kernels about to pop. When the pop occurs, the nucleus breaks apart, showering pieces of itself (radiation) in all directions. Radiation can pass through skin and destroy or damage important molecules within cells. The total amount of energy absorbed by these workers was less than would be absorbed by them if they had fallen off a chair yet when delivered by radiation, it proved deadly. 

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