An expert witness has cast doubt on suggestions toddler Poppi Worthington was sexually abused in the hours before her death.
Dr Nat Carey, a consultant forensic pathologist, told the inquest there was no clear-cut evidence of trauma implying third-party involvement.
His evidence contradicted the findings of Dr Alison Armour, who was called as a witness earlier in the week.
Poppi died suddenly at a house in Barrow on 12 December 2012.
No-one has been prosecuted.
Although he did not carry out his own post-mortem examination, Dr Carey said he had formed his opinion after studying photographs and slides.
He told the hearing he discounted Dr Armour’s assertion that marks found near Poppi’s fallopian tube were bruising resulting from sexual penetration.
Although he said he could not “absolutely exclude” penetration, Dr Cary said he would have “expected very obvious injury and there wasn’t anything of the sort”.
Catherine Thundercloud, a retired police officer with Cumbria Police, said it would have been “imperative” to get statements from people in the house and Poppi’s aunt, Tracy Worthington, as quickly as possible.
She also said whatever was used at the hospital should have been retained, including gloves worn by those attempting to resuscitate the youngster.
The sheet and equipment from the ambulance and the resuscitation room were not retained, the inquest has heard.
“It is imperative you ensure whatever is in that ambulance is taken straight away, it is not disposed of,” Ms Thundercloud said.
Also lost was a sheet used to swaddle Poppi after her death.
Mr Worthington has denied any wrongdoing.
Alison Hewitt, counsel for the coroner, asked her what officers should have known before they searched the house.
The inquest has heard the first police search began before first accounts had been gathered from Mr Worthington.
Ms Thundercloud said: “Unless you’ve read what he said you can’t do a proper strategy.”
She said those failures may have resulted in “vital evidence being lost”.
The hearing continues.