woman sat with leg outstretched to one side, other leg folded in, arm behind head, skeleton, lymphatic system illustration overlay. - 胸腺 分泌腺 個照片及圖片檔唾腺, 人體構造, 數碼合成
woman standing, body facing forward head turned to one side, illustration overlay showing skeleton and inner organs. - 胸腺 分泌腺 個照片及圖片檔血液流動
