The phrase "a multitude of unknown" is not correct in standard English usage.
It would typically be used in contexts discussing a large number of unknown factors, variables, or entities.
Example: "In the study of the universe, scientists often encounter a multitude of unknown that challenge their understanding of physics."
Alternatives: "a variety of unknowns" or "a range of uncertainties".
Ditner noted, "In addition to tremendously augmenting the gallery's existing collection of works by Penn, Avedon, Halsman, and Bourke-White witrulyuly outstanding examples of their work, the archive also contains a multitude of previously unknown images and brings with it a wealth of research opportunities.
Glycan structures of extracted CEA were then analyzed using MALDI-TOF-MS, which allowed for sensitive identification of a multitude of previously unknown glycan structures.
Ongoing (19– 21) and future mass spectrometry analyses of prohormone precursors will reveal a multitude of previously unknown peptide products generated from such precursors.
Unsettling still was the fact that while cancer cells could express a multitude of new and unknown antigens as a result of malignant transformation, the immune system was not stimulated to target these antigens/cells.
This approach resulted in hits to experimentally well characterized RNA features known from B. subtilis and other relatives, as well as in a multitude of so far unknown RNA features without any Rfam hit.
In spite of a multitude of theories, the primary cause is unknown.
Pessoa was the shy, probably celibate, at the time virtually unknown Portuguese poet who lived through a multitude of literary pseudonyms.
Titanium white oil paint exists in a multitude of different recipes, and the effect of the formulation on photocatalytic binder degradation kinetics is unknown.
Aβ is a peptide produced by the cleavage of amyloid precursor protein (APP), an integral membrane protein expressed by a multitude of cells but found in high concentrations at neuronal synapses, though the function of APP remains unknown.
