Recently, Dr Marija was recruited by the panel. Came to the lab where I am. Professor, told me she is the new assistant and will be teaching to medical faculty and in her free time she is willing to learn some research that I am involved with. I said, no problem. But the days appeared quite tuft. We used to put the experimental animal in the refrigerator. One day, I told her please change the fresh water from the tap in almost 20 bottles containing experimental animal. Ironically, she did it perfectly well. I did not watch her while filing the water because I was busy somewhere else. Later, she was almost done. The tap was little far away from refrigerator. I also helped her to put the bottles back to fridge. Suddenly, I noticed some of the bottles is quite warm in comparision to other. I asked her, what can be the reason some bottle are warm while others not? She told me with smile, I know animal ethics should be followed better. So, we must take care of leech you know, she replied. What have you done, I insisted? she told me we european know better about managing the temperature. That's why I change lukewarm water from the tap (Not to confused there are two running tap one for cold water and next for lukewarm water) I stare at her and said, this all animal will die, this is my hypothesis. I told her but she told me, they are parasite , don't worry.There was a logic in her statement, I didn't afford much to argue. All this event has been happened on friday. After weekend, I went to lab early monday, the lab was full of some bad smell. I wonder what has happened. I opened window first and door too. And, I slightly figured out some smell is coming from fridge. I opened the fridge , it was terrible smell. At once, I found there is lots of dead animal.I let it open sometime and went out for 10 minutes. we had almost 100 number of experimental animal, but after counting I found only 47 alive. I change cool water, and rest are well. When 53 were found dead, that day I did not wish to take my launch. I told Dr. Marija if you wanna serious done some experiment in near future, please take care of all parameter that you are doing. She looked me with a sorry face, but it was her innocence. I forgive her. May my experimental animal give her same forgiveness.................