Injury report: 49ers' Boone sits out practice with knee

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SANTA CLARA -- Guard Alex Boone was added to the 49ers’ injury report Thursday, as he sat out of practice with a knee injury.

Boone took part in the full practice on Wednesday, but was one of six players who did not participate in practice on Thursday, according to the 49ers.

Cornerback Kenneth Acker was held out of practice and must pass through the NFL’s concussion protocol in order to be cleared to play Sunday against the Atlanta Falcons.

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Wide receiver Anquan Boldin (hamstring) did not practice. His availability for Sunday’s game remains in question.

Running backs Carlos Hyde (foot) and Mike Davis (hand), and defensive back L.J. McCray (knee) are not expected to be available for Sunday’s game. Davis and McCray underwent surgeries on Tuesday. Davis has a fractured left hand, while McCray has torn cartilage in his left knee.

Tight end Garrett Celek has progressed through the concussion protocol to the point where he took part in limited practice on Thursday.

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Here are the participation reports from both teams from their Thursday practices:

49ERS
Did not participate
CB Kenneth Acker (chest, concussion)
WR Anquan Boldin (hamstring)
G Alex Boone (knee)
RB Mike Davis (hand)
RB Carlos Hyde (foot)
S L.J. McCray (knee)
Limited participation
LB Navorro Bowman (shoulder)
CB Tramaine Brock (shin)
LB Ahmad Brooks (shoulder)
TE Garrett Celek (concussion)
P Bradley Pinion (right calf)
CB Keith Reaser (not injury related, ankle)
Full participation
S Eric Reid (chest)
T Joe Staley (shoulder)

FALCONS
Did not participate
CB Robert Alford (groin)
LB Justin Durant (calf)
WR Leonard Hankerson (hamstring)
S William Moore (groin)
Limited participation
C Mike Person (ankle)
CB Desmond Trufant (back)
WR Nick Williams (hamstring)
Full participation
DE Tyson Jackson (ribs)
G James Stone (calf)

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