Vol. 67 Issue 4 2021
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Original ArticlesSerotonergic signals enhanced hamster sperm hyperactivationChiyori SAKAMOTO, Masakatsu FUJINOKI, Masafumi KITAZAWA, Satoshi OBAYASHI J Reprod Dev. 2021 Aug; 67(4): 241–250. Published online 2021 May 12. doi: 10.1262/jrd.2020-108 Cervix–rectum temperature differential at the time of insemination is correlated with the potential for pregnancy in dairy cowsFernando LÓPEZ-GATIUS, Irina GARCIA-ISPIERTO, Ronald H.F. HUNTER J Reprod Dev. 2021 Aug; 67(4): 251–255. Published online 2021 May 30. doi: 10.1262/jrd.2021-022 Advanced maternal age induces fetal growth restriction through decreased placental inflammatory cytokine expression and immune cell accumulation in miceYoshiki HIRATA, Yusuke KATSUKURA, Yuka HENMI, Ren OZAWA, Sayaka SHIMAZAKI, Akira KUROSAWA, Yasushi TORII, Hironori TAKAHASHI, Hisataka IWATA, Takehito KUWAYAMA, Koumei SHIRASUNA J Reprod Dev. 2021 Aug; 67(4): 257–264. Published online 2021 Jun 28. doi: 10.1262/jrd.2021-034 Successful blastocyst production by intracytoplasmic injection of sperm after in vitro maturation of follicular oocytes obtained from immature female squirrel monkeys (Saimiri boliviensis)Shinichi WATANABE, Megumi MIURA, Hiromi MORITA, Moeka NISHI, Shin-ichi YOKOTA, Shosaku HATTORI, Hiromichi MATSUMOTO, Emiko FUKUI, Ken Takeshi KUSAKABE, Masanori OCHI, Naomi NAKAGATA, Yasuo KISO, Chieko KAI, Midori YOSHIZAWA J Reprod Dev. 2021 Aug; 67(4): 265–272. Published online 2021 Jul 9. doi: 10.1262/jrd.2021-018 Effects of oocyte-derived growth factors on the growth of porcine oocytes and oocyte–cumulus cell complexes in vitroRiho MORIKAWA, Jibak LEE, Takashi MIYANO J Reprod Dev. 2021 Aug; 67(4): 273–281. Published online 2021 Jul 14. doi: 10.1262/jrd.2021-026 Direct embryotoxicity of chromium (III) exposure during preimplantation developmentYuhe TIAN, Qisheng ZHU, Jiayu YUAN, Robert KNEEPKENS, Yuan YUE, Chao ZHANG J Reprod Dev. 2021 Aug; 67(4): 283–291. Published online 2021 Jul 18. doi: 10.1262/jrd.2021-028 
