The conjoined twin sisters snatched at birth from their mother and 支配するd to cruel 医療の '実験s': One turned into a psychopath, the other a gentle soul who longed for a normal life

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They were the world's oldest living conjoined twins at the time of their death in 2003 老年の 53.

Snatched from their ロシアの mother に引き続いて their birth, Masha and Dasha Krivoshlyopova were 支配するd to a variety of cruel 医療の '実験s' by Stalin's Soviet 医療の 当局.?

The girls 株d a 血 system but had separate nervous systems - so were seen as ideal 支配するs for 研究.?

扱う／治療するd as 医療の guinea pigs they?were burnt, frozen, 餓死するd, 電気椅子で死刑にするd, kept 強制的に awake and 注入するd with 放射性の and other 有毒な 実体s in the 指名する of 'science'.

The twins were institutionalised?for much of their lives but their horrific?story has now been 明らかにする／漏らすd in 十分な for the first time by 新聞記者／雑誌記者 Juliet Butler.

Ms Butler befriended Masha and Dasha and said にもかかわらず 株ing the same genetics, horrific childhood and all of their lives the same lower 団体／死体 - the sisters had wildly different personalities.?

One was a cruel, domineering 'psychopath' who was 'emotionally abusive' to her caring, empath sister who remained?gentle and 肉親，親類d and longed for a normal life.

Masha and Dasha Krivoshlyopova were the world's oldest living conjoined twins at the time of their death in 2003

The sisters - who were never separated - pictured playing in the snow as youngsters?

Dasha had 手配中の，お尋ね者 外科 but her sister would never let it happen, said Ms?Butler

Ms Butler, who met them in 1988 and became friends with them, told MailOnline: 'I've no 疑問 at all that Masha was a psychopath - she ticked all the boxes.

'Dasha was in an emotionally abusive 関係 - 類似の to the 状況／情勢 some people find themselves in with a partner.?

'But while those people have a chance to leave, Dasha 肉体的に couldn't.

'Masha?否定するd Dasha everything she ever longed for ? a chance of love, a 関係 with their mother, a 職業 and even what she 手配中の，お尋ね者 most: a separate 団体／死体.'?

Ms Butler, who has written a novel based on their lives, The いっそう少なく You Know The Sounder You Sleep,?has 供給するd fascinating insights into the 悲劇の pair that reignite the nature versus 養育する 審議.

Dasha is show on the left and Masha on the 権利 pictured as adults

Used as guinea pigs?

Almost すぐに after the twins were born on January 1950 by caesarean section, they snatched from their mother?Yekaterina - who was told he r babies had died すぐに after birth.

Dasha and Masha were taken away to a 医療の 学校／設ける in the Moscow 地域,?the 学院 of 医療の Sciences Pediatric 学校／設ける, to be used as 医療の guinea pigs.

The girls 株d a 血 system but had separate nervous systems - so were seen as ideal 支配するs for 研究.

Soft-hearted Dasha (on the left) and domineering Masha 老年の 14

Scientists 成し遂げるd cruel 実験（する）s to ascertain their reactions to 長引かせるd sleep deprivation, extreme hunger, and 激しい 気温 change.

In one 実験, one twin was poked with needles to 査定する／（税金などを）課す the other for reactions and in another, one was 潜水するd into a tub of icy water to check the other’s 団体／死体 気温.

During childhood, one twin got measles and the other did not - their separate nervous systems meant one could become ill while the other was 罰金.????

Masha fo rced her sister to get drunk

In 1956 Dasha and Masha were transferred to the Central 科学の 研究 学校／設ける of Traumatology and Orthopedics.

In a cot where the young sisters were 実験d on in the 学院 of 医療の Sciences Pediatric 学校／設ける

The twins 老年の around six years old - around the time the cruel 実験s finally stopped

They were kept hidden from the public in a children's 区 for eight years before 存在 moved to 搭乗 school for children with モーター-impairment in southern Russia.

As adults, the women had 封鎖するd out the?外傷／ショック of their earlier childhood, によれば Ms Butler.

'It was myself who told?Dasha and Masha that they had been 支配する to these cruel 実験s from birth until the age of six, when I 設立する out about them,

'They said they couldn't remember. They could 解任する only happy things - such as the time a nurse brought them a toy.

As adults, the twins said the cannot remember the horrific 実験s they 耐えるd

'Masha got angry while Dasha just said "It wasn't their fault, they were just doing their 職業s". That's a typical reaction of 甘い Dasha.'

She 明らかにする／漏らすs how Masha was unable to 消費する alcohol so 軍隊d her sister to drink - so they could both get drunk.

'They had their own hearts and l ungs but 株d a 血 供給（する）, so when one drank alcohol they could both get drunk,' she explained.?

'But Masha was unable to because of a gag reflex. And にもかかわらず Dasha detesting alcohol she 軍隊d her to drink anyway.'

Possessive 'love'

Ms Butler says Dasha longed for a normal life and had fallen 深く，強烈に in love with a boy - but Masha 否定するd them a chance at happiness.

'It was very much requited - the boy really loved her 支援する. He tried so hard with Masha to get her on 味方する but she was possessive.?

'No one could have Dasha only her.'

Masha and Dasha look happy relaxing in this picture にもかかわらず their 有毒な dynamic

With 医療の 前進するs, many doctors 申し込む／申し出d over the years to separate the girls, but were 拒絶する／低下するd - by Masha.?

Ms Butler 解任するd visiting the sisters in the late Nineties with a letter from a British 外科医 who specialised in separating conjoined twins, 申し込む／申し出ing to help them.

'Dasha ちらりと見ることd across at Masha, her 注目する，もくろむs 十分な of hope, but Masha, looking straight ahead, すぐに said "nyet". And that, as Dasha would say, was that.'

And when later life they 設立する their birth mother Yekaterina Krivoshlyapova in 1985, again Masha decided after four years to 削減（する） off the 関係 - against Dasha's wishes.?

And sadly, when the girls met their two brothers they were 拒絶するd by them because of their looks.

Dasha 手配中の，お尋ね者 a 職業 and tried a 職業 putting rubber bulbs on pipettes - but?Masha was not 利益／興味d in changing her life and would smoke and read magazines.??

Even after death - Dasha was loyal?

The sisters lived in better 条件s when they moved to a?Home for 退役軍人s of 労働

The sisters pictured with?‘Aunty Nadya’, their physiotherapist who visited them every week

After making an 控訴，上告 on television, the sisters moved to a Home for 退役軍人s of 労働 with 大いに 改善するd living 条件s.

Ms Butler says that にもかかわらず their sad lives, the sisters were an inspiration.

'I 手配中の，お尋ね者 to 令状 the 調書をとる／予約する to show people how 甘い Dasha was. And it 肉親，親類d of is a tale of 勝利 over 悲劇.?

'In the end I noticed how Dasha stood up to Masha and put her in her place more.?

'にもかかわらず the 有毒な dynamic, at the end of the day they had been through a lot together and they had each other.?They 明確に loved each other 深く，強烈に.'

Then on April 17, 2003, Masha died of a heart attack - even then Dasha 辞退するd 分離, perhaps out of her own need to stay の近くに to her sister, or out of 忠義.?

Dasha was taken to hospital and died another 17 hours later 予定 to 血 毒（薬）ing from the 有毒な by-製品s of Masha's 分解するing 団体／死体.?

The いっそう少なく You Know the Sounder You Sleep by Juliet Butler, published by 4th 広い地所, is out now