The phrase "absence of a typical" is correct and usable in written English.
It can be used to describe a situation or condition where something that is usually expected or standard is not present.
Example: "The absence of a typical response from the audience left the speaker feeling uncertain about their performance."
Alternatives: "lack of a usual" or "nonexistence of a standard".
He laments the absence of "a typical author photo".
We identified three proteins, AGS1, AGS2 and AGS3 (for Activators of G-protein Signaling), that activated heterotrimeric G-protein signalling pathways in the absence of a typical receptor.
Evolutionary diversification among the monocotyledons appears to have been constrained by a number of fundamental features of the group, most notably the absence of a typical vascular cambium and the parallel-veined rather than net-veined leaves.
The single cotyledon, the parallel-veined leaves, the scattered vascular bundles in the stem, the absence of a typical cambium, and the adventitious root system of monocots are all regarded as derived characteristics within the angiosperms, and any plant more primitive than the monocots in these several respects would certainly be a dicot.
Absence of a typical LBBB contraction was independently associated with increased risk of adverse outcome after adjustment for ischemic heart disease and QRS width (hazard ratio [HR]: 3.1; 95% CI: 1.64 to 5.88; p < 0.005).
For example, in the absence of a typical clinical picture combined with equivocal point-of-care urinalysis results (e.g., positive leukocyte esterase only), the resulting post-test probability of these factors may not surpass the treatment threshold for acute pyelonephritis.
However, our karyotyping analysis revealed 10 chromosome pairs in C. lacryma-jobi and 10 paired plus 10 unpaired chromosomes in C. aquatica HG, implying the absence of any typical characteristics of a tetraploid or hexaploid genome.
Based on a constant growth rate (i.e. lower bound assumption), analysis shows that, in the absence of ICCS, a typical client would have been admitted 4.6 times in the 12 month post-referral period.
This syndrome must be considered even in absence of all typical symptoms to prevent the progression of a potentially life threatening condition.
The qualitative analysis of MA of cells grown in the absence of NaCl showed a typical profile of chain length between C31 and C38 of the MA (Fig. 3).
There were no clinically relevant significant changes in vital signs and ECG parameters, and there was an absence of the typical muscarinic side effects, such as dry mouth and increased heart rate, although this was a single dose study and these data need to be interpreted with caution.
