The phrase "a very aggressive form" is correct and usable in written English.
It can be used to describe a type or style that is particularly forceful or intense in nature.
Example: "The new marketing strategy represents a very aggressive form of outreach that targets potential customers directly."
Alternatives: "an extremely forceful type" or "a highly assertive version".
You obviously don't have a very aggressive form of R.A.
But his agenda was insidious: a slow-burn conversion to a very aggressive form of radicalism.
"This was a very aggressive form of hazing," Haroldson said in an interview Wednesday.
The researchers tested the bacteria in mice with a very aggressive form of colon cancer that spreads to the liver.
"It's a very aggressive form, almost like boxing at times, and I think the international federation needs to look at that.
She had a very aggressive form of breast cancer and passed away in 2009.
My dog, Kasey, developed Osteosarcoma--a very aggressive form of bone cancer, at just two years old.
Anaplastic thyroid cancer (ATC) is a rare but very aggressive form of this malignancy, accounting for less than 2% of all TC.
Strawberry's lawyer, Joe Ficarrotta, said: "Darryl Strawberry is not only fighting drug addiction at its highest level, but also fighting a battle against cancer, which is the very aggressive form that he has.
The discovery of their genetic basis has led to the identification of several gene mutations leading to a spectrum of progeroid phenotypes ranging from moderate and mild severe to very aggressive forms.
Depending on the pattern of occurring mutations, a polymorphic expression of BSEP can induce a wide spectrum of cholestatic phenotypes ranging from very mild to very aggressive forms, such as progressive familial intrahepatic cholestasis type 2 (PFIC2) (van Mil et al. 2004; Lam and Benet 2004; Pauli-Magnus et al. 2005; Oude Elferink et al. 2006; Takahashi et al. 2007a; Davit-Spraul et al. 2009).
