2008
DOI: 10.1007/s00428-008-0622-9
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The construction of high-density paraffin tissue microarrays with 0.43-mm-diameter paraffin tissue core biopsies is technically feasible

Abstract: Paraffin tissue microarrays (PTMAs) are blocks of paraffin containing up to 1,000 paraffin tissue core biopsies (PTCBs). The growing number of publications in recent years bears eloquent witness to the advantages of these PTMAs in high-throughput molecular profiling of tumor specimens. In order to conserve the often minute quantities of available tumor tissue with precisely recorded follow-up data and to store the greatest possible number of PTCBs in one block, researchers often try to reduce PTCBs to the smal… Show more

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Cited by 17 publications
(15 citation statements)
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“…Application of 2 mm punchers allows construction of tissue arrays with about 50–100 specimens [14], while application of 0.6 mm punchers allows construction of a typical array of 300–500 specimens with a spacing of 0.8 mm between sample centers per block in regular tissue cassettes. A recipient block could accommodate up to 1,000 samples since the core of diameter can be as small as 0.43 mm [20]. Removing small diameter cores of tissue means that the tissue in the main block is preserved and does not significantly damage the structure of the tumor in the donor block, which can be used for further conventional sectioning should this become necessary.…”
Section: Discussionmentioning
confidence: 99%
“…Application of 2 mm punchers allows construction of tissue arrays with about 50–100 specimens [14], while application of 0.6 mm punchers allows construction of a typical array of 300–500 specimens with a spacing of 0.8 mm between sample centers per block in regular tissue cassettes. A recipient block could accommodate up to 1,000 samples since the core of diameter can be as small as 0.43 mm [20]. Removing small diameter cores of tissue means that the tissue in the main block is preserved and does not significantly damage the structure of the tumor in the donor block, which can be used for further conventional sectioning should this become necessary.…”
Section: Discussionmentioning
confidence: 99%
“…;Vogel & Bueltman;Pires et al, 2006;Vogel, 2008;Hidalgo et al, 2003) However in some cases the elaboration requires the use of certain specialized tools, such as grinder and drill. In this study we intentionally avoid the use of electrical tools that could be in some cases difficult to obtain, most of materials used with the exception of cutting pliers are commonly used in various hospitals and offices, this allows a better reproduction of the method described in our study compared with those previously published.…”
Section: Discussionmentioning
confidence: 99%
“…Because it is easy to modify the number of cores in the array, it is easy to adapt this to individual labs and requirements. Vogel, [13] described a method that allows the construction of PTMAs with tissue cores only 0.43 mm in diameter in order to conserve the minute quantities of available tumor tissue and to store the greatest possible number of tissue cores in one block. So, we will try to construct PTMAs by the use of mechanical pencil tips with diameter 0.5 mm.…”
Section: Discussionmentioning
confidence: 99%