(A) Quantitative reverse-transcription polymerase chain reaction (qRT–PCR) with total RNA extracted from 4-week-old mouse ovary (Ov), uterus (Ut), testis (Te), kidney (Ki), lung (Lu), heart (He), liver (Li), brain (Br), stomach (St), intestines (In), muscle (Mu), spleen (Sp) were performed. Results were normalized to the abundance in the ovary and expressed as the mean ± SEM. (B) In situ hybridization of fixed, paraffin wax-embedded 6 µm ovary sections probed with DIG-labeled Nlrp2 oligonucleotide probes. The original magnification was ×100. (C) The relative abundance of Nlrp2 transcripts in mouse oocytes and preimplantation embryos. (D) The relative abundance of Nlrp2 transcripts in different mouse cells.