Tuberculin Patch Test and Mantoux Test

Pascher, Frances

doi:10.1001/archderm.1944.01510100032010

Cited by 6 publications

(2 citation statements)

References 15 publications

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“…This observation is apparently the first investigation demonstrating calcification in the chrysophytes utilizing modern x-ray microanalytical techniques and the first ever report of calcium phosphate biomineralization in the group. The accumulation of calcium carbonate has been demonstrated using classical techniques in loricae of chrysophycean algae such as Chrysocrinus (Pascher 1940) and Chrysococcus (Bourrelly 1963) and in pseudocysts of some Sarcinochrysidales Haas 1969, Gayral andLepailleur 1971). The presence of calcium phosphate in the mineralized stalks of A. vegetans may provide a clue as to the evolutionary position of the organism.…”

mentioning

confidence: 99%

BIOMINERALIZATION OF THE STALKS OF ANTHOPHYSA VEGETANS (CHRYSOPHYCEAE)¹

Lee

Kugrens

1989

Journal of Phycology

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Mineralized stalks of the chryophyte Anthophysa vegetans (0. F. Muller) Stein were examined by electron microscopy, and the composition of the stalks was determined by energy dispersive x-ray microanalysis. Colonies grown i n water from a local lake (Dowdy Lake) had mineralized stalks that were colorless and composed mainly of spherules of calcium phosphate up to 0.7 pm i n diameter. The addition of 0.1 m M MnCl, to the culture medium resulted i n deeplj orange-brown stalks mineralized primarily with minute granules of a manganese compound. The addition of 0.1 m M FeCl, to the culture media resulted in light yellow stalks mineralized mainly with small granules of a n iron compound. The addition of 0.1 m M MgCl, or KCI resulted in stalks that were similar in appearance and copposition to the colonies grown in culture medium alone. These results show that the composition of the mineralized stalks of A. vegetans is dependent on the elements present i n the culture medium. This is also the first time that calcium phosphate has been reported as a mineralization product i n the chrysophytes.

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confidence: 99%

BIOMINERALIZATION OF THE STALKS OF ANTHOPHYSA VEGETANS (CHRYSOPHYCEAE)¹

Lee

Kugrens

1989

Journal of Phycology

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“…This includes, for example, the difference between contact delayed allergy and dermal delayed allergy. There has been evidence for many years that these two forms of delayed allergy are not identical (29,30). One obvious difference is that Langerhans cells are the antigen-presenting cells in contact delayed allergy.…”

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confidence: 99%