ADJ

intramuscular, intravenous
anti-tetanus/tetanus, flu, pain-killing
insulin, penicillin, etc.
booster
Can I bring my dog in for his booster injection?
lethal
In some US states execution is by lethal injection
regular
daily

VERB + INJECTION

have
He had to have a tetanus injection after injuring himself with a shovel
administer, give sb, perform
They gave her an injection to stop the pain
receive
The rats received a daily injection of the drug

PREP

by ~
The best treatment is antibiotics, preferably by injection
~ against
an injection against whooping cough
~ for
injections for diabetes
~ in/into
an injection into the vein
~ with
Both groups received a second injection with the same solution

ADJ

massive, substantial
much-needed
capital, cash
An undisclosed buyer will provide a much-needed cash injection for the fragile balance sheet

VERB + INJECTION

need, require
give sth, provide (sth with)
receive

PREP

~ from
a cash injection from the Belgian state
~ into
an injection of cash into the economy

PHRASES

an injection of capital/cash/money/resources
The company had reached the size where it needed an injection of capital