For instance, based on the idea that individuals can and should thrive on their own, it is commonly accepted that endosymbiosis - an organism living non-autonomously inside another organism - is extremely difficult and has arisen very rarely throughout evolution.
First, the necessary genetic variation for the trait might arise only very rarely (if at all).
SFTs very rarely arise in female reproductive organs and, to our knowledge, just above ten cases of SFTs were reported in the female reproductive system (vulva, vagina, para-vaginal space, uterus, paraovarian tissue, broad ligament, fallopian tube) [ 2] and three of them in the uterine cervix [ 2- 4].
In summary, we found induction and overexpression of NrCAM in tumours arising from cells that very rarely express this cell-adhesion molecule in normal tissue.
As a multiple biomarker associated with epithelium origin (very rarely arisen from mesenchymal tissue, see table 2) TRImay may be used as an EMT (epithelium mesenchymal transition) specific cobiomarker.
Because of this procedure, the necessity for abdominal hysterectomy very rarely arises at the MIC clinic Berlin, where even large uteri can be removed using minimally invasive techniques.
Very rarely, MFH can arise in bone but in the proposed classification all cases classified morphologically as MFH are grouped with fibromatous neoplasms (Group 5.1).
With that in mind, here is McCreath's statement in full: Occasionally - very rarely - circumstances may arise in which a court has to say that whatever apparent merits a prosecution may have, the court cannot allow the prosecution case to be taken forward to trial.
Very rarely, a primary pulmonary neoplasm may arise within a pulmonary artery.
Studies analyzing such data, however, only very rarely consider the potentially substantive biases arising from how they are generated.
