Is there a difference here?

I would have been a little more specific, except I only had 40 characters, and this is kind of hard to explain.

Lately I've been toying around with monolingual dictionaries, and I was reading a definition for the word 生む (''umu''), and it read: 子や卵を、母体から出す。

I was unsure if 卵 (read たまご/''tamago'' and らん/''ran'') referred to both the kind of egg that animals lay, and the kind that female mammals have inside them. I looked up the definition, and I didn't see anything about たまご/''tamago'' being a human egg, but らん/''ran'' was described as a ''female reproductive cell''

I just want to know which reading is used here.

female reproductive cell
=らんし（卵子）

egg（of bird)=たまご（卵）

Thank you. I kind of picked up on that 卵子, but the definition on Sanseido for らん　【卵】 reads 雌性の生殖細胞．

I guess I was just confused which was which.

子(こ=baby)や卵（たまご=egg）を、母体（ぼたい=mothers body）から出す。

卵子（らんし）is ovum.