Typically, fast-growing, active endotherms have a type of bone tissue called fibrolamellar bone.

通常，快速生长、活跃的吸热动物有一种叫做纤维板层骨的骨组织。

But getting mixed results from bone tissue is not unheard-of: Fibrolamellar bone has been found in animals that we know are cold-blooded, like young alligators.

但是从骨组织中得到混合结果并非闻所未闻：在我们知道是冷血的动物身上发现了纤维板层骨，比如小鳄鱼。