Analisa Kimia Dr. Cheah Terlalu Lemah. Air Mani Saiful Sendiri Munkin Ada Di Duburnya

Pasukan peguambela Ketua Umum KEADILAN, Datuk Seri Anwar Ibrahim hari ini berjaya merobek hujah pendakwa raya dengan menimbulkan keraguan dalam analisa kimia yang dibuat dalam kes Fitnah II.

Semalam mahkamah mengetahui bahawa makmal DNA Jabatan Kimia Malaysia tiada sijil akreditasi antarabangsa dan tidak mengikut standard antarabangsa dalam menganalisa sampel bukti dari tubuh pengadu, Saiful Bukhari Azlan.

Hari ini, mahkamah diberitahu bahawa sampel sperma di dalam dubur Saiful berkemungkinan adalah sperma nya sendiri, yang turut mengandungi sel bukan sperma individu lain.

Pendedahan itu dilakukan pakar DNA,Dr Brian McDonald, yang menyambung keterangannya hari ini.

Menurut Dr McDonald, sebarang sampel air mani yang hendak dianalisa perlu bebas dari sebarang pencemaran dalam bentuk kehadiran sel bukan sperma yang lain.

Justeru, sampel air mani yang diambil dari rektum Saiful perlu melalui proses pengasingan yang dinamakan Differential Extraction Process untuk memisahkan sel sperma dan sel bukan sperma.

Jika tidak, DNA yang diekstrak dari sel sperma akan bercampur dengan DNA dari sel bukan sperma yang hadir dalam air mani dan menjejaskan analisa yang dilakukan, kata Dr McDonald.

“Berdasarkan bukti Dr Seah, ia dijalankan dengan tidak sempurna.

“Sebab beliau tidak tahu sama ada terdapat sel epitelium (kulit) dalam sampel sperma yang diambil,” kata Dr McDonald.

Beliau turut membidas laporan Dr Seah yang tidak jelas dan menambah, mereka yang membaca laporan itu tidak dapat meneka dengan jelas graf elektroferogram yang merujuk kepada calitan kapas dari bahagian-bahagian tertentu.

“Beliau tidak mencatatkan sebarang nombor (atau apa-apa).

“Kita mungkin silap teka,” kata Dr McDonalds

Peguam Anwar, Sankara Nair pula menyifatkan Dr Seah tidak objektif secara saintifik.

“Dr Seah meneka yang pengasingan (DNA sperma dan DNA bukan sperma) muktamad tanpa sebarang pengulangan (proses pengasingan).

“Proses yang beliau lakukan tidak memastikan bahawa kepala sperma yang diekstrak dan dijumpai dalam air mani adalah kepala sperma semata-mata dan tidak bercampur dengan sel-sel lain.

“Dr Seah secara saintifiknya tidak objektif,” kata Sankara.

Perbicaraan kes Fitnah II yang ditangguhkan hari ini akan bersidang semula pada 19 sehingga 23 September depan.

Expert: Findings on DNA sample mere guesswork

An Australian DNA expert says the government scientist's conclusions were not scientifically objective.

KUALA LUMPUR: Government scientist Dr Seah Lay Hong’s conclusions in her chemistry report, which subsequently enabled the prosecution to allege that Anwar Ibrahim’s sperm was found in Mohd Saiful Bukhari Azlan’s anus, were based on mere guesswork, an Australian expert told the High Court here today.

Dr Dr Brian Leslie McDonald, an Australian consultant molecular geneticist, said the report was not “scientifically objective” when continuing his testimony in Anwar’s Sodomy II trial.

Yesterday, the DNA expert said that in sexual assault cases, it was critical to be able identify that a DNA sample is derived from the sperm cell.

In order to conclusively say that a DNA profile comes from sperm, as opposed to other types of cells, a chemist needs to separate sperm cells from other types of cells by conducting a “differential extraction process”.

“This process was not done properly (by Dr Seah),” McDonald told the court when questioned by defence lawyer Ram Karpal Singh.

He said this was evident in her own “guess” that there were still other types of cells present after the separation process.

“If she maintained that the DNA (found in Saiful’s anus) is from the epithelial cells (non-sperm cells), then she should have done the separation process again,” he said.

‘Ball bearings’

McDonald said if the process was done right, the sample should only have had sperm cells remaining.

“She could not have been scientifically objective in her conclusions. She had no evidence to support them, ” he said.

Asked by Ram if it was then possible that the one DNA profile found in Saiful’s anus may have been his own sperm, McDonald agreed, saying that Seah’s finding excludes nothing; it may even include the possibility that the DNA profile might have been from Anwar’s other cells and not sperm.

Previously, Anwar’s defence had suggested that one of the two DNA profiles from the semen found in Saiful belonged to the complainant himself.

Earlier, explaining the differential extraction process (DEP), McDonald said sperm cells are tough, like “ball bearings”; while the other types of cells, being much weaker, are like “balloons”.

He walks the court through how a scientist can separate sperm from other cells by “bursting the balloons” through the DEP.

Yesterday, McDonald was critical of the several mistakes made by local chemists in the labelling of a DNA sample, saying that Seah had committed a “sackable offence” that is so serious that it “could have killed someone”.