The U.S. Embassy in Japan has advised Americans to avoid bars and clubs in central Tokyo’s Roppongi nightlife area, saying on its website that there had been a sharp rise in cases of Americans being served spiked drinks.

“Typically, the victim unknowingly drinks a beverage that has been secretly mixed with a drug that renders the victim unconscious for several hours, during which time large sums of money are charged to the victim’s credit card or the card is stolen outright,” the Embassy said.

A Tokyo Police spokesman said no claims had been filed about such incidents in recent weeks. The U.S. Embassy was unable to confirm how many cases it had been advised of.

Among the entertainment on offer in Roppongi are hostess bars, where men pay hundreds of dollars to drink and chat with women.

“The crime in Roppongi is kind of a recurring problem, unfortunately,” said U.S. Embassy spokeswoman Lori Shoemaker.

Roppongi has been home to large numbers of restaurants and bars since the suburb was home to a U.S. Army base after World War Two.

Briton Lucie Blackman was killed while employed by a Roppongi hostess bar in 2000. Her remains were later found in a seaside cave.

Is this another conflict ?

In Japan, was born bull clone, At used for insemination, which is a die 15 years ago.

The birth of the “copies” animals whose tissue is saved more than a decade at a temperature of 80 degrees Celsius below zero was first proved resistance genetic material that is located in the cell.

The experiment showed that it is possible to save the tissue of animals threatened with eradication to be in the future this kind of re-restored to life.

Cloning is carried out by a group of scientists from the Institute for zoo research in Gifu, on the island of Honshu.

Clone bull was born in July 2008. from cells of Jusufuku, bull died of age in September 1993.

He was known for that is significantly contributed to the extraordinary selection of cattle meat.

Scientists are keep his testicles in the aluminum box and keep them ten years frozen to minus 80 degrees Celsius.

Then they have three years to keep the temperature even lower liquid nitrogen (minus 196 degrees).