Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
--------
Question: Context: Reactive oxygen species are involved in ovulation. The aim of this study was to examine gonadotropin regulation of antioxidant enzyme sulfiredoxin (Srx) and peroxiredoxin 2 (PRDX2) expressions and modification during the ovulatory process in rats. Administration of antioxidants in vivo reduced ovulation rate and cumulus expansion. LH treatment increased H(2)O(2) levels within 15 min, which, in turn, induced Srx gene expression in cultured preovulatory follicles. Treatment of preovulatory follicles with catalase suppressed the stimulatory effect of LH on Akt phosphorylation. LH- or H(2)O(2)-stimulated Srx mRNA levels were suppressed by inhibitors of antioxidant agents and MAPK kinase. An in vivo injection of equine chorionic gonadotropin-human chorionic gonadotropin (hCG) stimulated Srx mRNA within 1 h in granulosa but not thecal cells of preovulatory follicles. Srx protein levels were stimulated from 3 h post-hCG injection. Immunofluorescence analysis revealed that oocytes expressed the Srx protein. Furthermore, hCG treatment increased Srx expression in mural granulosa, theca and cumulus cells, but the Srx protein was not detected in corpora lutea. Gene expression of PRDX2, identified as an Srx-dependent modified enzyme, was stimulated by gonadotropins. In situ hybridization analysis demonstrated that PRDX2 mRNA was detected in oocytes and theca cells as well as granulosa cells of some antral and preovulatory follicles. High levels of PRDX2 mRNA were detected in corpora lutea. Total levels of PRDX2 protein were not changed by gonadotropins. However, levels of hyperoxidized PRDX2 increased within 2-3 h after the hCG injection. Taken together, gonadotropin stimulation of Srx expression and PRDX2 modification in the ovary suggest the existence of an antioxidant system to maintain H(2)O(2) production and elimination during the periovulatory period.
Question: What type of enzyme is peroxiredoxin 2 (PRDX2)?

Answer: antioxidant

Question: Context: Defects in DNA mismatch repair have been associated with both hereditary and sporadic forms of cancer. Recently, it has been shown that human cell lines deficient in mismatch repair were also defective in the transcription-coupled repair (TCR) of UV-induced DNA damage. We examined whether TCR of ionizing radiation-induced DNA damage also requires the genes involved in DNA mismatch repair. Cells defective in the hMSH2 gene were deficient in the removal of oxidative damage, including thymine glycols, from the transcribed strand of an active gene. However, an hMLH1 mutant showed normal levels of TCR. By comparison, defects in either hMSH2 or hMLH1 resulted in reduced TCR of UV damage. Introducing chromosomes carrying either hMSH2 or hMLH1 into these cell lines restored their ability to carry out TCR. Deficiencies in either hMSH2 or hMLH1 did not result in decreased overall genomic levels of repair or lead to an increased sensitivity to either UV or ionizing radiation. Our results provide the first evidence for a protein that is absolutely required for the preferential removal of UV-induced DNA damage but not oxidative DNA damage from the transcribed strand of an active human gene.
Question: Which gene strand is targeted by transcription-coupled repair (TCR)?

Answer: the transcribed strand

Question: Context: The Creek War (1813--1814), also known as the Red Stick War and the Creek Civil War, was a regional war between opposing Creek factions, European empires, and the United States, taking place largely in Alabama and along the Gulf Coast.
Question: What year did Creek War start?

Answer:
1813