Frozen semen

Japanese: 凍結精液 - とうけつせいえき(英語表記)frozen semen
Frozen semen
Semen diluted with a preservation solution and frozen in liquid nitrogen (-196°C). Used for artificial insemination of livestock. When livestock sperm is diluted with a preservation solution mainly made of egg yolk, sodium citrate, and glucose and stored at around 5°C, it can only retain its fertilizing ability for 4 to 5 days. However, in 1952, C. Polge and his colleagues in the UK succeeded in freezing semen on dry ice (-79°C) using a preservation solution containing glycerin as a cryoprotectant (7% of the total volume of diluted semen), and this was followed by a shift to cryopreservation.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
保存液で希釈した精液を,液体窒素(-196℃)で凍結したもの。家畜の人工授精に用いる。家畜精子を,卵黄,クエン酸ナトリウム,ブドウ糖を主体にした保存液で希釈して5℃前後で保存した場合は,4~5日しか受精能力を保持できなかった。しかし,1952年にイギリスのポルジC.Polgeらが抗凍結剤としてグリセリンを添加(希釈精液総量の7%)した保存液を用いてドライアイス(-79℃)での凍結に成功してからは,凍結保存に切り替わった。

出典 株式会社平凡社世界大百科事典 第2版について 情報

<<:  Freeze grinding

>>:  Freezing method

Recommend

Pelecanus conspicillatus (English spelling) Pelecanusconspicillatus

…[Maki Sachiko]. . . *Some of the terminology tha...

"The Origin of Christianity" - Kirishitankongenki

...Author unknown. This is a summary of the anti-...

Radovan

… Meanwhile, inland Croatia came under Hungarian ...

Kanbara Shrine Tomb - Kanbara Shrine Tomb

This ancient tomb was located beneath the main ha...

Jalapa (English spelling)

Its official name is Jalapa Enríquez. It is the ca...

Action film

A film that emphasizes external actions (action) r...

Piri Reis (English spelling)

?-1550 A 16th-century Ottoman admiral. Born in Gel...

Nagano Shinkansen

This is the provisional nickname for the section ...

Thetis

…in Greek legend, he was the greatest hero of the...

Johann Geiler

1445‐1510 German preacher. Raised in Kaisersberg i...

Treaty of Utchari

…Official name: State of EritreaArea: 121,144 km2...

Huaisheng Mosque

… [Islamic temple] Islam is said to have been int...

Volcanic gas - Kazan gas (English spelling)

Gas that erupts from volcanoes. It is also called ...

Bletia verecunda (English spelling) Bletia verecunda

… [History of the discovery of orchids] The first...

Adriatic Sea - Adriatic Sea

A part of the Mediterranean Sea, between the Ital...