CryoLetters is a bimonthly international journal for low temperature sciences, including cryobiology, cryopreservation or vitrification of cells and tissues, chemical and physical aspects of freezing and drying, and studies involving ecology of cold environments, and cold adaptation

The journal publishes original research reports, authoritative reviews, technical developments and commissioned book reviews of studies of the effects produced by low temperatures on a wide variety of scientific and technical processes, or those involving low temperature techniques in the investigation of physical, chemical, biological and ecological problems.

Abstracts Volume 41 No 6 is now available

	Volume 41, No. 6 November/December 2020 ISSN 0143-2044
	PERSPECTIVE: Nanoparticle-mediated delivery of cryoprotectants for cryopreservation Samantha Stewart, Alyssa Arminan and Xiaoming He	308-316
	Difference in freezing tolerance between young potato plants derived from tissue culture plantlets and seed tubers Kenta Kawamura, Jiwan P. Palta, Masahiko Mori and Jun Kasuga	317-322
	Oocytes of the endangered gray catfish (Surubim-do-Paraíba) submitted to different conservation protocols Taís da Silva Lopes and Elizabeth Romagosa	323-329
	Gene expression of fresh and frozen/thawed canine embryos Carlos Renato de Freitas Guaitolini, Rosiara Rosaria Dias Maziero, Anthony César de Souza Castilho, Ana Augusta Pagnano Derussi, Rodrigo Volpato, Camila Louise Ackermann, Lídia Mitsuko Matsubara and Maria Denise Lopes	330-336
	Practical and safe method of long-term cryopreservation for clinical application of human adipose-derived mesenchymal stem cells without a programmable freezer or serum Siqiang Gao, Mika Ogawa, Akiyoshi Takami, Kyosuke Takeshita, Hidefumi Kato and Takayuki Nakayama	337-343
	The protective effects of alpha lipoic acid on human sperm function during freezing-thawing Erfaneh Shaygannia, Rana Ghandehari-Alavijeh, Marziyeh Tavalaee and Mohammad	344-350
	Effect of disaccharide inclusion in vitrification and warming solutions on developmental competence of vitrified/warmed germinal vesicle stage (GV) buffalo oocytes Amr S. El-Shalofy, Sayed T. Ismail, Aly A.B. Badawy, Gamal M. Darwish, Magdy R. Badr and Adel R. Moawad	351-357
	Skimmed milk diluent promotes the sperm motility and conception rate of Dorper sheep compared to vitamin B12 diluent Yuan-Yuan Bai, Xiu Xu, Xiao-Jie Yu, Jian Guo, Xiao-Xue Dong, Xin-Yang Wang, Zhen-Ao Zhao and Jing Wang	358-364
	Cryopreservation of bovine semen using extract of Bertholletia excelsa (Brazil nuts) Franciellem Thaiuina de Souza Silva, Janaina Barros Luz, Luis Rennan Sampaio Oliveira, Rafael Mezzomo, Daiany Íris Gomes, Cláudia Siqueira Caldas, Aller Silva Soares,  José Carlos Ferreira-Sila, Marcos Antonio Lemos Oliveira and Kaliandra Souza Alves	365-370
	Subject and species indices	371-374

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Executive Editor
Professor Hugh Pritchard

Associate Editors
Dr Florent Engelman
Professor Barry Fuller
Professor Wendell Sun

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