Sentence examples for but the precise origin from inspiring English sources

Osteoclasts are derived from the monocyte/macrophage lineage, but the precise origin remains unclear.

Transmissible mink encepholapathy (TME) is a foodborne transmissible spongiform encephalopathy (TSE) of ranch-raised mink; infection with a ruminant TSE has been proposed as the cause, but the precise origin of TME is unknown.

The precise origin of "girl" is unknown, but, McConnell-Ginet said, the word started cropping up in English texts in the 13th century, used to refer to a young person, but not necessarily a female child.

The precise origin of the slick was unclear but Italian officials said absorbent booms placed around the 950-foot hull and beyond were trapping it.

In fact, the precise origin of the word "Dixie" remains unknown, though three competing theories persist.

The precise origin of assigning December 25 as the birth date of Jesus is unclear.

EAST RUTHERFORD, N.J. — The precise origin of the term red zone is one of football's mysteries.

The precise origin of the use of peyote as a religious sacrament among North American native peoples remains uncertain.

While the precise origin of tipping is uncertain, it is commonly traced to Tudor England, according to "Tipping," Kerry Segrave's history of the custom.

Whatever the precise origin of Mr. Knox's fake letter, Aames's rules require harder proof of self-employment, like a business license or advertising receipts.

The precise origin of the Hopi is unknown, although it is thought that they and other Pueblo peoples descended from the Ancestral Pueblo (Anasazi), whom the Hopi call Hisatsinom, "Ancient People".