fresh blood; lifeblood
Refers to blood that is still fresh, often with a vivid or visceral nuance. Can also be used metaphorically for something essential or vital.
Fresh blood flowed from the wound.
その経験は彼の創作活動の生血となった。
That experience became the lifeblood of his creative work.
Compound of 生 (なま, 'raw, fresh') and 血 (ち, 'blood'). The reading なまち is a straightforward combination.