ሳይንስዓለም አቀፍየኮቪድ-19 ምርምር በሰው- ሰራሽ የአንጎል ህዋሳትTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስዓለም አቀፍTsehay Chane13 መስከረም 2013ረቡዕ፣ መስከረም 13 2013https://p.dw.com/p/3iuF7ማስታወቂያ