| 摘要 |
The invention provides compositions and methods useful in the analysis of tissues and cells. More specifically, the invention provides compositions, referred to as "pseudo-tissue samples," which comprise aggregated fixed cells embedded in an embedding medium. The invention also provides histological specimens comprising pseudo-tissues, as well as histological specimen-substrate compositions, such as microscope slides upon which pseudo-tissues and histological specimens prepared therefrom are placed. The histological specimen-substrate compositions may comprise arrays (or microarrays) of pseudo-tissues and/or histological specimens. The invention also provides methods for preparing pseudo-tissues, histological specimens, and histological specimen-substrate compositions containing the same. Also provided is a method for analyzing a tissue sample by comparing the subcellular features of a reference histological specimen to those found in a candidate histological specimen, such that one or more subcellular features shared by both the candidate and reference histological specimens may be identified. The subcellular features that may be identified include, e.g., DNA, RNA, proteins, enzymes and carbohydrates.
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