What's the difference between therefore and theretofore?

Therefore


Definition:

  • (adv.) For that or this reason, referring to something previously stated; for that.
  • (adv.) Consequently; by consequence.

Example Sentences:

  • (1) Therefore, these findings may extend the use of platelets as neuronal models.
  • (2) Therefore, it is suggested that PE patients without endogenous erythroid colonies may follow almost the same clinical course as SP patients.
  • (3) Herpesviruses such as EBV, HSV, and human herpes virus-6 (HHV-6) have a marked tropism for cells of the immune system and therefore infection by these viruses may result in alterations of immune functions, leading at times to a state of immunosuppression.
  • (4) Elements in the skin therefore seemed to enhance nerve regeneration and function.
  • (5) IT can, therefore, be excluded almost with certainty that the meat would contain such large amounts of hormone residues.
  • (6) The present study was therefore carried out to specify further which type of adrenoceptor is involved in lithium-induced hyperglycaemia and inhibition of insulin secretion.
  • (7) These authors, therefore, conclude that this modified surgical approach is a viable alternative to the previously described procedures for resistant metatarsus adductus.
  • (8) Therefore, we have developed a powerful new microcomputer-based system which permits detailed investigations and evaluation of 3-D and 4-D (dynamic 3-D) biomedical images.
  • (9) Enhanced sensitivity to ITDs should translate to better-defined azimuthal receptive fields, and therefore may be a step toward achieving an optimal representation of azimuth within the auditory pathway.
  • (10) Therefore, neither of these two regions of the Tat protein appear to be discrete activation domains.
  • (11) We therefore enumerated the percentage of Leu2a+ cells as well as the occurrence of HLA-DR activation markers within this population.
  • (12) Alleles in this region can be exchanged between X and Y chromosomes and are therefore inherited as if autosomal.
  • (13) Therefore, we undertook a follow-up study on the survivors of 57 infants who received IUT's between 1966 and 1975.
  • (14) The blastocyst antiluteolytic protein therefore closely resembles the interferon-alpha family of antiviral proteins.
  • (15) Therefore, the measurement of the alpha-antitrypsin content plays the crucial part in differential diagnosis of primary (hereditary determined) and secondary (obstructive) emphysema.
  • (16) Measuring this value therefore is a very promising procedure.
  • (17) Current recommendations regarding contraception in patients with diabetes are not appropriate for the adolescent population and therefore tend to support this phenomenon rather than relieve it.
  • (18) It is therefore necessary, to look at typical clinical manifestations, i.e.
  • (19) The electrical stimulation of the tail associated to a restraint condition of the rat produces a significant increase of immunoreactive DYN in cervical, thoracic and lumbar segments of spinal cord, therefore indicating a correlative, if not causal, relationship between the spinal dynorphinergic system and aversive stimuli.
  • (20) In this way they offer the doctor the chance of preventing genetic handicaps that cannot be obtained by natural reproduction, and that therefore should be used.

Theretofore


Definition:

  • (adv.) Up to that time; before then; -- correlative with heretofore.

Example Sentences:

  • (1) Pseudomonas putrefaciens should theretofore be retained as a single species and characteristics for identifying the various groups within the species are listed.
  • (2) Generally speaking, the news media don't lament the theretofore bright futures of young men (or women) convicted of other violent crimes, such as the killing of girlfriends or executing down-on-their-luck job-hunters .