The phrase "are only undergoing" is correct and usable in written English.
It can be used to describe a situation where something is currently experiencing a process or change, often in a limited or specific context.
Example: "The patients in this study are only undergoing preliminary tests before the main trial begins."
Alternatives: "are merely experiencing" or "are just going through".
When we removed LTP in our model the PF-PC synapses were only undergoing depression, eventually bringing the weights to their lower bound.
The garden in the south is a new build on the division of a site that previously had a lovely garden, and, though the house on the hill is only undergoing renovation, an extension into the garden has made almost as much mess.
Further, comparing this with the HSP expression data, an inverse correlation becomes apparent: culture D.HS-2 also shows the lowest activation of the cytosolic HSP70 isoforms, thus indicating that this culture was only undergoing a moderate heat-shock but shows the lowest reduction of SAg 51D transcripts.
Four checkpoint inhibitors have been approved for adults, but they are only now undergoing broader testing in children.
Patients that underwent surgical exploration and were not deemed a candidate for CS/HIPEC were excluded from this study, as were patients only undergoing CS without HIPEC.
The drug is only now undergoing the late-stage clinical trials and Genzyme is aiming for government approval in 2012.
Although this particular disk is ~10 times the diameter of the Kuiper belt, modeling implies that a star like Beta Pictoris, perhaps as young as 20 million years old, is only now undergoing its earliest, somewhat turgid, evolutionary phase akin to that probably experienced by our own Sun ~5 billion years ago.
The craft was revealed in 2008 but is only now undergoing sea tests aboard the USS Harry S. Truman, including moving around on the carrier.
Core collapse supernovae are only found in galaxies undergoing current or very recent star formation, since they result from short-lived massive stars.
To our knowledge, there are only four cases that underwent cardiac surgery for the metastasis (Table 1) [13–16].
