Dr.Chen: " Every ejaculation, there are around 150 million sperms... why one time ejaculation needs so much of sperms? "
students: ''..........."
Dr.Chen: " Because... sperms have no GPS....."
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Microscopy on last tuesday. woot. i was observing a slide of grasshopper's testis. A good quality slide exposed me to a clear view of this little fascinating men rule world.
Worms and tadpoles everywhere
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