*
xenopus
, , , !
. .
→
, !!!
" "
- :)
Paul Lung. , ...
" , , ": 1 - 2 - , ! ( 3)... 20 - .. 21 - . . 22 - Paul Lung.
1. 2. 3.
... - !
, -
ultrasagol
, . .. , , . , ! . -!
, . , , , . (徐新奇) - . 1951 . , .