Ommission- there is a word missing in each line.

Wright and Fleming found out that treatment

Being used was doing harm than good.Each

of chemical antiseptics more harmful to

the leukocytes than to the germs ;and some cases

the antiseptic actually facilitated multiplication germs.

wrightand fleming found

Here is answer of your question
1)Fleming?had?found

2)doing?more?harm

3)of?the?chemical? ,antiseptics?were?more

4)and?in?some

multiplication?of?germs.

      WORD BEFORE    WORD OMITTED    WORD AFTER

A.)  that                         the                             treatment
B.)  doing                      more                           harm
C.) and                           in                               some
D.) multiplication            of                              germs
E.) aims                      should                            be
F.) not                             so                               much 
G.) do                            their                          natural

Wright and Fleming insisted that the surgeon's aim be not much to kill the germs find the omission

Once a man coming to the bus stand to bored a bus

Before. Word. After. That the treatment Doing more harm Antiseptics were And in Multiplication of Aim should Not so Leukocytes wonder Revolution in